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Finding the Fourth Proportional to 18,887,098.80, 28,334,584.80 and 10,793,449.20

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Solution

The fourth proportional to 18,887,098.80, 28,334,584.80 and 10,793,449.20 is: 16,192,423.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887,098.80 : 28,334,584.80 = 10,793,449.20 : x
  2. Step 2: Convert to fraction form
    18,887,098.80/28,334,584.80 = 10,793,449.20/x
  3. Step 3: Cross multiply
    18,887,098.80x = 28,334,584.80 × 10,793,449.20
  4. Step 4: Simplify right side
    18,887,098.80x = 305,827,901,641,892.12
  5. Step 5: Solve for x
    x = 305,827,901,641,892.12/18,887,098.80
  6. Step 6: Final answer
    x = 16,192,423.46

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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.