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Finding the Fourth Proportional to 71,557.40, 98,747.30 and 42,893.26

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Solution

The fourth proportional to 71,557.40, 98,747.30 and 42,893.26 is: 59,191.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,557.40 : 98,747.30 = 42,893.26 : x
  2. Step 2: Convert to fraction form
    71,557.40/98,747.30 = 42,893.26/x
  3. Step 3: Cross multiply
    71,557.40x = 98,747.30 × 42,893.26
  4. Step 4: Simplify right side
    71,557.40x = 4,235,593,473.56
  5. Step 5: Solve for x
    x = 4,235,593,473.56/71,557.40
  6. Step 6: Final answer
    x = 59,191.55

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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.