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Finding the Fourth Proportional to 113,706.65, 156,915.90 and 62,720.76

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Solution

The fourth proportional to 113,706.65, 156,915.90 and 62,720.76 is: 86,555.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,706.65 : 156,915.90 = 62,720.76 : x
  2. Step 2: Convert to fraction form
    113,706.65/156,915.90 = 62,720.76/x
  3. Step 3: Cross multiply
    113,706.65x = 156,915.90 × 62,720.76
  4. Step 4: Simplify right side
    113,706.65x = 9,841,885,092.52
  5. Step 5: Solve for x
    x = 9,841,885,092.52/113,706.65
  6. Step 6: Final answer
    x = 86,555.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.