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Finding the Fourth Proportional to 66,407.92, 99,621.60 and 24,290.08

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Solution

The fourth proportional to 66,407.92, 99,621.60 and 24,290.08 is: 36,438.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,407.92 : 99,621.60 = 24,290.08 : x
  2. Step 2: Convert to fraction form
    66,407.92/99,621.60 = 24,290.08/x
  3. Step 3: Cross multiply
    66,407.92x = 99,621.60 × 24,290.08
  4. Step 4: Simplify right side
    66,407.92x = 2,419,816,633.73
  5. Step 5: Solve for x
    x = 2,419,816,633.73/66,407.92
  6. Step 6: Final answer
    x = 36,438.68

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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.