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Finding the Fourth Proportional to 125,436.14, 188,233.53 and 65,572.65

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Solution

The fourth proportional to 125,436.14, 188,233.53 and 65,572.65 is: 98,400.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,436.14 : 188,233.53 = 65,572.65 : x
  2. Step 2: Convert to fraction form
    125,436.14/188,233.53 = 65,572.65/x
  3. Step 3: Cross multiply
    125,436.14x = 188,233.53 × 65,572.65
  4. Step 4: Simplify right side
    125,436.14x = 12,342,971,193.88
  5. Step 5: Solve for x
    x = 12,342,971,193.88/125,436.14
  6. Step 6: Final answer
    x = 98,400.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.