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Finding the Fourth Proportional to 125,061.75, 172,584.18 and 67,699.91

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Solution

The fourth proportional to 125,061.75, 172,584.18 and 67,699.91 is: 93,425.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,061.75 : 172,584.18 = 67,699.91 : x
  2. Step 2: Convert to fraction form
    125,061.75/172,584.18 = 67,699.91/x
  3. Step 3: Cross multiply
    125,061.75x = 172,584.18 × 67,699.91
  4. Step 4: Simplify right side
    125,061.75x = 11,683,932,590.50
  5. Step 5: Solve for x
    x = 11,683,932,590.50/125,061.75
  6. Step 6: Final answer
    x = 93,425.31

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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.