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Finding the Fourth Proportional to 125,178.86, 172,747.50 and 68,592.26

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Solution

The fourth proportional to 125,178.86, 172,747.50 and 68,592.26 is: 94,657.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,178.86 : 172,747.50 = 68,592.26 : x
  2. Step 2: Convert to fraction form
    125,178.86/172,747.50 = 68,592.26/x
  3. Step 3: Cross multiply
    125,178.86x = 172,747.50 × 68,592.26
  4. Step 4: Simplify right side
    125,178.86x = 11,849,141,434.35
  5. Step 5: Solve for x
    x = 11,849,141,434.35/125,178.86
  6. Step 6: Final answer
    x = 94,657.69

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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.