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Finding the Fourth Proportional to 125,165.52, 172,721.16 and 68,567.04

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Solution

The fourth proportional to 125,165.52, 172,721.16 and 68,567.04 is: 94,618.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,165.52 : 172,721.16 = 68,567.04 : x
  2. Step 2: Convert to fraction form
    125,165.52/172,721.16 = 68,567.04/x
  3. Step 3: Cross multiply
    125,165.52x = 172,721.16 × 68,567.04
  4. Step 4: Simplify right side
    125,165.52x = 11,842,978,686.57
  5. Step 5: Solve for x
    x = 11,842,978,686.57/125,165.52
  6. Step 6: Final answer
    x = 94,618.54

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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.