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Finding the Fourth Proportional to 71,561.01, 98,747.04 and 39,726.48

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Solution

The fourth proportional to 71,561.01, 98,747.04 and 39,726.48 is: 54,818.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,561.01 : 98,747.04 = 39,726.48 : x
  2. Step 2: Convert to fraction form
    71,561.01/98,747.04 = 39,726.48/x
  3. Step 3: Cross multiply
    71,561.01x = 98,747.04 × 39,726.48
  4. Step 4: Simplify right side
    71,561.01x = 3,922,872,309.62
  5. Step 5: Solve for x
    x = 3,922,872,309.62/71,561.01
  6. Step 6: Final answer
    x = 54,818.57

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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.