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Finding the Fourth Proportional to 71,781.48, 107,659.26 and 25,047.72

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Solution

The fourth proportional to 71,781.48, 107,659.26 and 25,047.72 is: 37,567.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,781.48 : 107,659.26 = 25,047.72 : x
  2. Step 2: Convert to fraction form
    71,781.48/107,659.26 = 25,047.72/x
  3. Step 3: Cross multiply
    71,781.48x = 107,659.26 × 25,047.72
  4. Step 4: Simplify right side
    71,781.48x = 2,696,618,999.89
  5. Step 5: Solve for x
    x = 2,696,618,999.89/71,781.48
  6. Step 6: Final answer
    x = 37,567.06

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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.