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Finding the Fourth Proportional to 81,677,794.60, 122,516,691.90 and 81,677,794.60

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Solution

The fourth proportional to 81,677,794.60, 122,516,691.90 and 81,677,794.60 is: 122,516,691.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,677,794.60 : 122,516,691.90 = 81,677,794.60 : x
  2. Step 2: Convert to fraction form
    81,677,794.60/122,516,691.90 = 81,677,794.60/x
  3. Step 3: Cross multiply
    81,677,794.60x = 122,516,691.90 × 81,677,794.60
  4. Step 4: Simplify right side
    81,677,794.60x = 10,006,893,196,079,684
  5. Step 5: Solve for x
    x = 10,006,893,196,079,684/81,677,794.60
  6. Step 6: Final answer
    x = 122,516,691.90

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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.