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Finding the Fourth Proportional to 124,585.60, 186,856.80 and 45,659.20

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Solution

The fourth proportional to 124,585.60, 186,856.80 and 45,659.20 is: 68,480.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,585.60 : 186,856.80 = 45,659.20 : x
  2. Step 2: Convert to fraction form
    124,585.60/186,856.80 = 45,659.20/x
  3. Step 3: Cross multiply
    124,585.60x = 186,856.80 × 45,659.20
  4. Step 4: Simplify right side
    124,585.60x = 8,531,732,002.56
  5. Step 5: Solve for x
    x = 8,531,732,002.56/124,585.60
  6. Step 6: Final answer
    x = 68,480.88

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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.