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Finding the Fourth Proportional to 5,516.76, 7,613.12 and 3,032.76

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Solution

The fourth proportional to 5,516.76, 7,613.12 and 3,032.76 is: 4,185.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,516.76 : 7,613.12 = 3,032.76 : x
  2. Step 2: Convert to fraction form
    5,516.76/7,613.12 = 3,032.76/x
  3. Step 3: Cross multiply
    5,516.76x = 7,613.12 × 3,032.76
  4. Step 4: Simplify right side
    5,516.76x = 23,088,765.81
  5. Step 5: Solve for x
    x = 23,088,765.81/5,516.76
  6. Step 6: Final answer
    x = 4,185.20

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Half scale
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Double scale
Find fourth proportional to 5,517.76, 7,614.50 and 3,033.76
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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.