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Finding the Fourth Proportional to 8,193,798.60, 12,290,697.90 and 7,381,984.20

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Solution

The fourth proportional to 8,193,798.60, 12,290,697.90 and 7,381,984.20 is: 11,072,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,193,798.60 : 12,290,697.90 = 7,381,984.20 : x
  2. Step 2: Convert to fraction form
    8,193,798.60/12,290,697.90 = 7,381,984.20/x
  3. Step 3: Cross multiply
    8,193,798.60x = 12,290,697.90 × 7,381,984.20
  4. Step 4: Simplify right side
    8,193,798.60x = 90,729,737,704,773.19
  5. Step 5: Solve for x
    x = 90,729,737,704,773.19/8,193,798.60
  6. Step 6: Final answer
    x = 11,072,976.30

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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.