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Finding the Fourth Proportional to 71,658.82, 98,881.30 and 41,439.56

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Solution

The fourth proportional to 71,658.82, 98,881.30 and 41,439.56 is: 57,182.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,658.82 : 98,881.30 = 41,439.56 : x
  2. Step 2: Convert to fraction form
    71,658.82/98,881.30 = 41,439.56/x
  3. Step 3: Cross multiply
    71,658.82x = 98,881.30 × 41,439.56
  4. Step 4: Simplify right side
    71,658.82x = 4,097,597,564.23
  5. Step 5: Solve for x
    x = 4,097,597,564.23/71,658.82
  6. Step 6: Final answer
    x = 57,182.04

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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.