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Finding the Fourth Proportional to 13,908,031.20, 20,862,046.80 and 10,548,799.20

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Solution

The fourth proportional to 13,908,031.20, 20,862,046.80 and 10,548,799.20 is: 15,823,198.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908,031.20 : 20,862,046.80 = 10,548,799.20 : x
  2. Step 2: Convert to fraction form
    13,908,031.20/20,862,046.80 = 10,548,799.20/x
  3. Step 3: Cross multiply
    13,908,031.20x = 20,862,046.80 × 10,548,799.20
  4. Step 4: Simplify right side
    13,908,031.20x = 220,069,542,594,202.56
  5. Step 5: Solve for x
    x = 220,069,542,594,202.56/13,908,031.20
  6. Step 6: Final answer
    x = 15,823,198.80

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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.