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Finding the Fourth Proportional to 8,809,257.20, 13,209,949.20 and 3,416,115.20

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Solution

The fourth proportional to 8,809,257.20, 13,209,949.20 and 3,416,115.20 is: 5,122,646.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809,257.20 : 13,209,949.20 = 3,416,115.20 : x
  2. Step 2: Convert to fraction form
    8,809,257.20/13,209,949.20 = 3,416,115.20/x
  3. Step 3: Cross multiply
    8,809,257.20x = 13,209,949.20 × 3,416,115.20
  4. Step 4: Simplify right side
    8,809,257.20x = 45,126,708,253,347.84
  5. Step 5: Solve for x
    x = 45,126,708,253,347.84/8,809,257.20
  6. Step 6: Final answer
    x = 5,122,646.24

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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.