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Finding the Fourth Proportional to 125,352.24, 172,998.53 and 71,644.97

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Solution

The fourth proportional to 125,352.24, 172,998.53 and 71,644.97 is: 98,877.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,352.24 : 172,998.53 = 71,644.97 : x
  2. Step 2: Convert to fraction form
    125,352.24/172,998.53 = 71,644.97/x
  3. Step 3: Cross multiply
    125,352.24x = 172,998.53 × 71,644.97
  4. Step 4: Simplify right side
    125,352.24x = 12,394,473,268.68
  5. Step 5: Solve for x
    x = 12,394,473,268.68/125,352.24
  6. Step 6: Final answer
    x = 98,877.16

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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.