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Finding the Fourth Proportional to 125,456.16, 173,129.68 and 68,095.50

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Solution

The fourth proportional to 125,456.16, 173,129.68 and 68,095.50 is: 93,971.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,456.16 : 173,129.68 = 68,095.50 : x
  2. Step 2: Convert to fraction form
    125,456.16/173,129.68 = 68,095.50/x
  3. Step 3: Cross multiply
    125,456.16x = 173,129.68 × 68,095.50
  4. Step 4: Simplify right side
    125,456.16x = 11,789,351,560.32
  5. Step 5: Solve for x
    x = 11,789,351,560.32/125,456.16
  6. Step 6: Final answer
    x = 93,971.88

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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.