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Finding the Fourth Proportional to 71,361,001.20, 99,690,168.06 and 71,361,001.20

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Solution

The fourth proportional to 71,361,001.20, 99,690,168.06 and 71,361,001.20 is: 99,690,168.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,361,001.20 : 99,690,168.06 = 71,361,001.20 : x
  2. Step 2: Convert to fraction form
    71,361,001.20/99,690,168.06 = 71,361,001.20/x
  3. Step 3: Cross multiply
    71,361,001.20x = 99,690,168.06 × 71,361,001.20
  4. Step 4: Simplify right side
    71,361,001.20x = 7,113,990,202,557,862
  5. Step 5: Solve for x
    x = 7,113,990,202,557,862/71,361,001.20
  6. Step 6: Final answer
    x = 99,690,168.06

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.