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Finding the Fourth Proportional to 5,700.24, 7,867.80 and 3,715.76

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Solution

The fourth proportional to 5,700.24, 7,867.80 and 3,715.76 is: 5,128.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,700.24 : 7,867.80 = 3,715.76 : x
  2. Step 2: Convert to fraction form
    5,700.24/7,867.80 = 3,715.76/x
  3. Step 3: Cross multiply
    5,700.24x = 7,867.80 × 3,715.76
  4. Step 4: Simplify right side
    5,700.24x = 29,234,856.53
  5. Step 5: Solve for x
    x = 29,234,856.53/5,700.24
  6. Step 6: Final answer
    x = 5,128.71

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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.