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Finding the Fourth Proportional to 124,472.60, 186,687.30 and 45,546.20

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Solution

The fourth proportional to 124,472.60, 186,687.30 and 45,546.20 is: 68,311.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,472.60 : 186,687.30 = 45,546.20 : x
  2. Step 2: Convert to fraction form
    124,472.60/186,687.30 = 45,546.20/x
  3. Step 3: Cross multiply
    124,472.60x = 186,687.30 × 45,546.20
  4. Step 4: Simplify right side
    124,472.60x = 8,502,897,103.26
  5. Step 5: Solve for x
    x = 8,502,897,103.26/124,472.60
  6. Step 6: Final answer
    x = 68,311.40

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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.