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Finding the Fourth Proportional to 71,548.54, 98,741.46 and 39,717.97

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Solution

The fourth proportional to 71,548.54, 98,741.46 and 39,717.97 is: 54,813.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,548.54 : 98,741.46 = 39,717.97 : x
  2. Step 2: Convert to fraction form
    71,548.54/98,741.46 = 39,717.97/x
  3. Step 3: Cross multiply
    71,548.54x = 98,741.46 × 39,717.97
  4. Step 4: Simplify right side
    71,548.54x = 3,921,810,346.04
  5. Step 5: Solve for x
    x = 3,921,810,346.04/71,548.54
  6. Step 6: Final answer
    x = 54,813.28

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1.5x scale

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.