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Finding the Fourth Proportional to 5,482.92, 7,565.88 and 3,715.20

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Solution

The fourth proportional to 5,482.92, 7,565.88 and 3,715.20 is: 5,126.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,482.92 : 7,565.88 = 3,715.20 : x
  2. Step 2: Convert to fraction form
    5,482.92/7,565.88 = 3,715.20/x
  3. Step 3: Cross multiply
    5,482.92x = 7,565.88 × 3,715.20
  4. Step 4: Simplify right side
    5,482.92x = 28,108,757.38
  5. Step 5: Solve for x
    x = 28,108,757.38/5,482.92
  6. Step 6: Final answer
    x = 5,126.60

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Half scale
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Double scale
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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.