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Finding the Fourth Proportional to 71,592.87, 98,799.38 and 39,328.85

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Solution

The fourth proportional to 71,592.87, 98,799.38 and 39,328.85 is: 54,274.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,592.87 : 98,799.38 = 39,328.85 : x
  2. Step 2: Convert to fraction form
    71,592.87/98,799.38 = 39,328.85/x
  3. Step 3: Cross multiply
    71,592.87x = 98,799.38 × 39,328.85
  4. Step 4: Simplify right side
    71,592.87x = 3,885,665,305.47
  5. Step 5: Solve for x
    x = 3,885,665,305.47/71,592.87
  6. Step 6: Final answer
    x = 54,274.48

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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.