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Finding the Fourth Proportional to 71,615.40, 98,818.26 and 41,394.87

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Solution

The fourth proportional to 71,615.40, 98,818.26 and 41,394.87 is: 57,118.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,615.40 : 98,818.26 = 41,394.87 : x
  2. Step 2: Convert to fraction form
    71,615.40/98,818.26 = 41,394.87/x
  3. Step 3: Cross multiply
    71,615.40x = 98,818.26 × 41,394.87
  4. Step 4: Simplify right side
    71,615.40x = 4,090,569,026.33
  5. Step 5: Solve for x
    x = 4,090,569,026.33/71,615.40
  6. Step 6: Final answer
    x = 57,118.57

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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.