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Finding the Fourth Proportional to 113,674.16, 156,866.72 and 62,689.02

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Solution

The fourth proportional to 113,674.16, 156,866.72 and 62,689.02 is: 86,508.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,674.16 : 156,866.72 = 62,689.02 : x
  2. Step 2: Convert to fraction form
    113,674.16/156,866.72 = 62,689.02/x
  3. Step 3: Cross multiply
    113,674.16x = 156,866.72 × 62,689.02
  4. Step 4: Simplify right side
    113,674.16x = 9,833,820,633.97
  5. Step 5: Solve for x
    x = 9,833,820,633.97/113,674.16
  6. Step 6: Final answer
    x = 86,508.85

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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.