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Finding the Fourth Proportional to 6,518,891.60, 9,781,836.60 and 2,732,757.20

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Solution

The fourth proportional to 6,518,891.60, 9,781,836.60 and 2,732,757.20 is: 4,100,602.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,518,891.60 : 9,781,836.60 = 2,732,757.20 : x
  2. Step 2: Convert to fraction form
    6,518,891.60/9,781,836.60 = 2,732,757.20/x
  3. Step 3: Cross multiply
    6,518,891.60x = 9,781,836.60 × 2,732,757.20
  4. Step 4: Simplify right side
    6,518,891.60x = 26,731,384,397,873.52
  5. Step 5: Solve for x
    x = 26,731,384,397,873.52/6,518,891.60
  6. Step 6: Final answer
    x = 4,100,602.68

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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.