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Finding the Fourth Proportional to 42,513.93, 63,766.04 and 11,351.61

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Solution

The fourth proportional to 42,513.93, 63,766.04 and 11,351.61 is: 17,026.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,513.93 : 63,766.04 = 11,351.61 : x
  2. Step 2: Convert to fraction form
    42,513.93/63,766.04 = 11,351.61/x
  3. Step 3: Cross multiply
    42,513.93x = 63,766.04 × 11,351.61
  4. Step 4: Simplify right side
    42,513.93x = 723,847,160.57
  5. Step 5: Solve for x
    x = 723,847,160.57/42,513.93
  6. Step 6: Final answer
    x = 17,026.12

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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.