Home / 91,877,328,715.20-137,815,993,072.80-78,163,599,998.40

Finding the Fourth Proportional to 91,877,328,715.20, 137,815,993,072.80 and 78,163,599,998.40

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Solution

The fourth proportional to 91,877,328,715.20, 137,815,993,072.80 and 78,163,599,998.40 is: 117,245,399,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,877,328,715.20 : 137,815,993,072.80 = 78,163,599,998.40 : x
  2. Step 2: Convert to fraction form
    91,877,328,715.20/137,815,993,072.80 = 78,163,599,998.40/x
  3. Step 3: Cross multiply
    91,877,328,715.20x = 137,815,993,072.80 × 78,163,599,998.40
  4. Step 4: Simplify right side
    91,877,328,715.20x = 10,772,194,155,924,601,962,496
  5. Step 5: Solve for x
    x = 10,772,194,155,924,601,962,496/91,877,328,715.20
  6. Step 6: Final answer
    x = 117,245,399,997.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.