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Finding the Fourth Proportional to 18,729.82, 25,844.95 and 10,345.82

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Solution

The fourth proportional to 18,729.82, 25,844.95 and 10,345.82 is: 14,276.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.82 : 25,844.95 = 10,345.82 : x
  2. Step 2: Convert to fraction form
    18,729.82/25,844.95 = 10,345.82/x
  3. Step 3: Cross multiply
    18,729.82x = 25,844.95 × 10,345.82
  4. Step 4: Simplify right side
    18,729.82x = 267,387,200.61
  5. Step 5: Solve for x
    x = 267,387,200.61/18,729.82
  6. Step 6: Final answer
    x = 14,276.02

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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.