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Finding the Fourth Proportional to 125,609.92, 188,442.56 and 69,531.82

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Solution

The fourth proportional to 125,609.92, 188,442.56 and 69,531.82 is: 104,313.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,609.92 : 188,442.56 = 69,531.82 : x
  2. Step 2: Convert to fraction form
    125,609.92/188,442.56 = 69,531.82/x
  3. Step 3: Cross multiply
    125,609.92x = 188,442.56 × 69,531.82
  4. Step 4: Simplify right side
    125,609.92x = 13,102,754,162.26
  5. Step 5: Solve for x
    x = 13,102,754,162.26/125,609.92
  6. Step 6: Final answer
    x = 104,313.05

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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.