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Finding the Fourth Proportional to 124,232.52, 171,397.16 and 81,237.16

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Solution

The fourth proportional to 124,232.52, 171,397.16 and 81,237.16 is: 112,078.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,232.52 : 171,397.16 = 81,237.16 : x
  2. Step 2: Convert to fraction form
    124,232.52/171,397.16 = 81,237.16/x
  3. Step 3: Cross multiply
    124,232.52x = 171,397.16 × 81,237.16
  4. Step 4: Simplify right side
    124,232.52x = 13,923,819,080.12
  5. Step 5: Solve for x
    x = 13,923,819,080.12/124,232.52
  6. Step 6: Final answer
    x = 112,078.70

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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.