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Finding the Fourth Proportional to 8,878,889.90, 13,324,555.65 and 5,691,766.70

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Solution

The fourth proportional to 8,878,889.90, 13,324,555.65 and 5,691,766.70 is: 8,541,637.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878,889.90 : 13,324,555.65 = 5,691,766.70 : x
  2. Step 2: Convert to fraction form
    8,878,889.90/13,324,555.65 = 5,691,766.70/x
  3. Step 3: Cross multiply
    8,878,889.90x = 13,324,555.65 × 5,691,766.70
  4. Step 4: Simplify right side
    8,878,889.90x = 75,840,262,140,966.86
  5. Step 5: Solve for x
    x = 75,840,262,140,966.86/8,878,889.90
  6. Step 6: Final answer
    x = 8,541,637.86

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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.