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Finding the Fourth Proportional to 18,591,808.80, 27,887,713.20 and 17,316,350.40

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Solution

The fourth proportional to 18,591,808.80, 27,887,713.20 and 17,316,350.40 is: 25,974,525.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591,808.80 : 27,887,713.20 = 17,316,350.40 : x
  2. Step 2: Convert to fraction form
    18,591,808.80/27,887,713.20 = 17,316,350.40/x
  3. Step 3: Cross multiply
    18,591,808.80x = 27,887,713.20 × 17,316,350.40
  4. Step 4: Simplify right side
    18,591,808.80x = 482,913,413,625,905.25
  5. Step 5: Solve for x
    x = 482,913,413,625,905.25/18,591,808.80
  6. Step 6: Final answer
    x = 25,974,525.60

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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.