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Finding the Fourth Proportional to 838,656,168.40, 1,257,984,252.60 and 838,656,168.40

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Solution

The fourth proportional to 838,656,168.40, 1,257,984,252.60 and 838,656,168.40 is: 1,257,984,252.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,656,168.40 : 1,257,984,252.60 = 838,656,168.40 : x
  2. Step 2: Convert to fraction form
    838,656,168.40/1,257,984,252.60 = 838,656,168.40/x
  3. Step 3: Cross multiply
    838,656,168.40x = 1,257,984,252.60 × 838,656,168.40
  4. Step 4: Simplify right side
    838,656,168.40x = 1,055,016,253,193,053,568
  5. Step 5: Solve for x
    x = 1,055,016,253,193,053,568/838,656,168.40
  6. Step 6: Final answer
    x = 1,257,984,252.60

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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.