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Finding the Fourth Proportional to 5,861.28, 8,085.60 and 3,737.28

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Solution

The fourth proportional to 5,861.28, 8,085.60 and 3,737.28 is: 5,155.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,861.28 : 8,085.60 = 3,737.28 : x
  2. Step 2: Convert to fraction form
    5,861.28/8,085.60 = 3,737.28/x
  3. Step 3: Cross multiply
    5,861.28x = 8,085.60 × 3,737.28
  4. Step 4: Simplify right side
    5,861.28x = 30,218,151.17
  5. Step 5: Solve for x
    x = 30,218,151.17/5,861.28
  6. Step 6: Final answer
    x = 5,155.55

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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.