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Finding the Fourth Proportional to 113,698.38, 156,904.98 and 62,713.32

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Solution

The fourth proportional to 113,698.38, 156,904.98 and 62,713.32 is: 86,545.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,698.38 : 156,904.98 = 62,713.32 : x
  2. Step 2: Convert to fraction form
    113,698.38/156,904.98 = 62,713.32/x
  3. Step 3: Cross multiply
    113,698.38x = 156,904.98 × 62,713.32
  4. Step 4: Simplify right side
    113,698.38x = 9,840,032,220.33
  5. Step 5: Solve for x
    x = 9,840,032,220.33/113,698.38
  6. Step 6: Final answer
    x = 86,545.05

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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.