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Finding the Fourth Proportional to 5,244.59, 7,221.92 and 5,128.17

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Solution

The fourth proportional to 5,244.59, 7,221.92 and 5,128.17 is: 7,061.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,244.59 : 7,221.92 = 5,128.17 : x
  2. Step 2: Convert to fraction form
    5,244.59/7,221.92 = 5,128.17/x
  3. Step 3: Cross multiply
    5,244.59x = 7,221.92 × 5,128.17
  4. Step 4: Simplify right side
    5,244.59x = 37,035,207.85
  5. Step 5: Solve for x
    x = 37,035,207.85/5,244.59
  6. Step 6: Final answer
    x = 7,061.61

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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.