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Finding the Fourth Proportional to 125,046.88, 172,565.20 and 68,463.52

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Solution

The fourth proportional to 125,046.88, 172,565.20 and 68,463.52 is: 94,479.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,046.88 : 172,565.20 = 68,463.52 : x
  2. Step 2: Convert to fraction form
    125,046.88/172,565.20 = 68,463.52/x
  3. Step 3: Cross multiply
    125,046.88x = 172,565.20 × 68,463.52
  4. Step 4: Simplify right side
    125,046.88x = 11,814,421,021.50
  5. Step 5: Solve for x
    x = 11,814,421,021.50/125,046.88
  6. Step 6: Final answer
    x = 94,479.93

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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.