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Finding the Fourth Proportional to 124,565.40, 186,734.70 and 45,660.60

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Solution

The fourth proportional to 124,565.40, 186,734.70 and 45,660.60 is: 68,449.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,565.40 : 186,734.70 = 45,660.60 : x
  2. Step 2: Convert to fraction form
    124,565.40/186,734.70 = 45,660.60/x
  3. Step 3: Cross multiply
    124,565.40x = 186,734.70 × 45,660.60
  4. Step 4: Simplify right side
    124,565.40x = 8,526,418,442.82
  5. Step 5: Solve for x
    x = 8,526,418,442.82/124,565.40
  6. Step 6: Final answer
    x = 68,449.33

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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.