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Finding the Fourth Proportional to 125,871.45, 188,910.45 and 124,887.30

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Solution

The fourth proportional to 125,871.45, 188,910.45 and 124,887.30 is: 187,433.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,871.45 : 188,910.45 = 124,887.30 : x
  2. Step 2: Convert to fraction form
    125,871.45/188,910.45 = 124,887.30/x
  3. Step 3: Cross multiply
    125,871.45x = 188,910.45 × 124,887.30
  4. Step 4: Simplify right side
    125,871.45x = 23,592,516,042.29
  5. Step 5: Solve for x
    x = 23,592,516,042.29/125,871.45
  6. Step 6: Final answer
    x = 187,433.42

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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.