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Finding the Fourth Proportional to 3,909,776,087.20, 5,864,664,130.80 and 3,909,776,087.20

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Solution

The fourth proportional to 3,909,776,087.20, 5,864,664,130.80 and 3,909,776,087.20 is: 5,864,664,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909,776,087.20 : 5,864,664,130.80 = 3,909,776,087.20 : x
  2. Step 2: Convert to fraction form
    3,909,776,087.20/5,864,664,130.80 = 3,909,776,087.20/x
  3. Step 3: Cross multiply
    3,909,776,087.20x = 5,864,664,130.80 × 3,909,776,087.20
  4. Step 4: Simplify right side
    3,909,776,087.20x = 22,929,523,578,061,414,400
  5. Step 5: Solve for x
    x = 22,929,523,578,061,414,400/3,909,776,087.20
  6. Step 6: Final answer
    x = 5,864,664,130.80

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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.