Home / 83,038,923.20-124,558,384.80-78,335,998.40

Finding the Fourth Proportional to 83,038,923.20, 124,558,384.80 and 78,335,998.40

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Solution

The fourth proportional to 83,038,923.20, 124,558,384.80 and 78,335,998.40 is: 117,503,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,038,923.20 : 124,558,384.80 = 78,335,998.40 : x
  2. Step 2: Convert to fraction form
    83,038,923.20/124,558,384.80 = 78,335,998.40/x
  3. Step 3: Cross multiply
    83,038,923.20x = 124,558,384.80 × 78,335,998.40
  4. Step 4: Simplify right side
    83,038,923.20x = 9,757,405,432,399,384
  5. Step 5: Solve for x
    x = 9,757,405,432,399,384/83,038,923.20
  6. Step 6: Final answer
    x = 117,503,997.60

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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.