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Finding the Fourth Proportional to 113,066.43, 156,032.31 and 62,081.38

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Solution

The fourth proportional to 113,066.43, 156,032.31 and 62,081.38 is: 85,672.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,066.43 : 156,032.31 = 62,081.38 : x
  2. Step 2: Convert to fraction form
    113,066.43/156,032.31 = 62,081.38/x
  3. Step 3: Cross multiply
    113,066.43x = 156,032.31 × 62,081.38
  4. Step 4: Simplify right side
    113,066.43x = 9,686,701,129.39
  5. Step 5: Solve for x
    x = 9,686,701,129.39/113,066.43
  6. Step 6: Final answer
    x = 85,672.65

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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.