Home / 91,584,220.20-137,376,330.30-85,915,516.20

Finding the Fourth Proportional to 91,584,220.20, 137,376,330.30 and 85,915,516.20

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Solution

The fourth proportional to 91,584,220.20, 137,376,330.30 and 85,915,516.20 is: 128,873,274.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,584,220.20 : 137,376,330.30 = 85,915,516.20 : x
  2. Step 2: Convert to fraction form
    91,584,220.20/137,376,330.30 = 85,915,516.20/x
  3. Step 3: Cross multiply
    91,584,220.20x = 137,376,330.30 × 85,915,516.20
  4. Step 4: Simplify right side
    91,584,220.20x = 11,802,758,331,386,202
  5. Step 5: Solve for x
    x = 11,802,758,331,386,202/91,584,220.20
  6. Step 6: Final answer
    x = 128,873,274.30

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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.