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Finding the Fourth Proportional to 66,203,863.20, 99,246,697.20 and 25,804,951.20

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Solution

The fourth proportional to 66,203,863.20, 99,246,697.20 and 25,804,951.20 is: 38,684,391.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,203,863.20 : 99,246,697.20 = 25,804,951.20 : x
  2. Step 2: Convert to fraction form
    66,203,863.20/99,246,697.20 = 25,804,951.20/x
  3. Step 3: Cross multiply
    66,203,863.20x = 99,246,697.20 × 25,804,951.20
  4. Step 4: Simplify right side
    66,203,863.20x = 2,561,056,178,007,176.50
  5. Step 5: Solve for x
    x = 2,561,056,178,007,176.50/66,203,863.20
  6. Step 6: Final answer
    x = 38,684,391.73

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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.