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Finding the Fourth Proportional to 113,671.53, 156,863.13 and 62,686.41

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Solution

The fourth proportional to 113,671.53, 156,863.13 and 62,686.41 is: 86,505.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,671.53 : 156,863.13 = 62,686.41 : x
  2. Step 2: Convert to fraction form
    113,671.53/156,863.13 = 62,686.41/x
  3. Step 3: Cross multiply
    113,671.53x = 156,863.13 × 62,686.41
  4. Step 4: Simplify right side
    113,671.53x = 9,833,186,481.06
  5. Step 5: Solve for x
    x = 9,833,186,481.06/113,671.53
  6. Step 6: Final answer
    x = 86,505.27

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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.