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Finding the Fourth Proportional to 9,881,978.60, 14,822,967.90 and 9,787,500.20

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Solution

The fourth proportional to 9,881,978.60, 14,822,967.90 and 9,787,500.20 is: 14,681,250.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,881,978.60 : 14,822,967.90 = 9,787,500.20 : x
  2. Step 2: Convert to fraction form
    9,881,978.60/14,822,967.90 = 9,787,500.20/x
  3. Step 3: Cross multiply
    9,881,978.60x = 14,822,967.90 × 9,787,500.20
  4. Step 4: Simplify right side
    9,881,978.60x = 145,079,801,285,843.56
  5. Step 5: Solve for x
    x = 145,079,801,285,843.56/9,881,978.60
  6. Step 6: Final answer
    x = 14,681,250.30

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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.