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Finding the Fourth Proportional to 42,616.12, 63,913.92 and 13,034.21

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Solution

The fourth proportional to 42,616.12, 63,913.92 and 13,034.21 is: 19,548.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,616.12 : 63,913.92 = 13,034.21 : x
  2. Step 2: Convert to fraction form
    42,616.12/63,913.92 = 13,034.21/x
  3. Step 3: Cross multiply
    42,616.12x = 63,913.92 × 13,034.21
  4. Step 4: Simplify right side
    42,616.12x = 833,067,455.20
  5. Step 5: Solve for x
    x = 833,067,455.20/42,616.12
  6. Step 6: Final answer
    x = 19,548.18

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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.