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Finding the Fourth Proportional to 8,560,978.48, 11,813,836.80 and 4,693,414.78

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Solution

The fourth proportional to 8,560,978.48, 11,813,836.80 and 4,693,414.78 is: 6,476,740.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,560,978.48 : 11,813,836.80 = 4,693,414.78 : x
  2. Step 2: Convert to fraction form
    8,560,978.48/11,813,836.80 = 4,693,414.78/x
  3. Step 3: Cross multiply
    8,560,978.48x = 11,813,836.80 × 4,693,414.78
  4. Step 4: Simplify right side
    8,560,978.48x = 55,447,236,245,627.91
  5. Step 5: Solve for x
    x = 55,447,236,245,627.91/8,560,978.48
  6. Step 6: Final answer
    x = 6,476,740.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.