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Finding the Fourth Proportional to 8,391.60, 11,578.68 and 5,033.52

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Solution

The fourth proportional to 8,391.60, 11,578.68 and 5,033.52 is: 6,945.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.60 : 11,578.68 = 5,033.52 : x
  2. Step 2: Convert to fraction form
    8,391.60/11,578.68 = 5,033.52/x
  3. Step 3: Cross multiply
    8,391.60x = 11,578.68 × 5,033.52
  4. Step 4: Simplify right side
    8,391.60x = 58,281,517.35
  5. Step 5: Solve for x
    x = 58,281,517.35/8,391.60
  6. Step 6: Final answer
    x = 6,945.22

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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.