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Finding the Fourth Proportional to 5,581.86, 8,373.11 and 1,686.17

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Solution

The fourth proportional to 5,581.86, 8,373.11 and 1,686.17 is: 2,529.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.86 : 8,373.11 = 1,686.17 : x
  2. Step 2: Convert to fraction form
    5,581.86/8,373.11 = 1,686.17/x
  3. Step 3: Cross multiply
    5,581.86x = 8,373.11 × 1,686.17
  4. Step 4: Simplify right side
    5,581.86x = 14,118,436.59
  5. Step 5: Solve for x
    x = 14,118,436.59/5,581.86
  6. Step 6: Final answer
    x = 2,529.34

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.