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Finding the Fourth Proportional to 113,203.71, 156,221.15 and 62,902.71

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Solution

The fourth proportional to 113,203.71, 156,221.15 and 62,902.71 is: 86,805.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,203.71 : 156,221.15 = 62,902.71 : x
  2. Step 2: Convert to fraction form
    113,203.71/156,221.15 = 62,902.71/x
  3. Step 3: Cross multiply
    113,203.71x = 156,221.15 × 62,902.71
  4. Step 4: Simplify right side
    113,203.71x = 9,826,733,379.80
  5. Step 5: Solve for x
    x = 9,826,733,379.80/113,203.71
  6. Step 6: Final answer
    x = 86,805.75

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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.