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Finding the Fourth Proportional to 124,494.80, 186,766.20 and 53,416.40

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Solution

The fourth proportional to 124,494.80, 186,766.20 and 53,416.40 is: 80,134.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,494.80 : 186,766.20 = 53,416.40 : x
  2. Step 2: Convert to fraction form
    124,494.80/186,766.20 = 53,416.40/x
  3. Step 3: Cross multiply
    124,494.80x = 186,766.20 × 53,416.40
  4. Step 4: Simplify right side
    124,494.80x = 9,976,378,045.68
  5. Step 5: Solve for x
    x = 9,976,378,045.68/124,494.80
  6. Step 6: Final answer
    x = 80,134.90

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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.