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Finding the Fourth Proportional to 8,778.70, 12,113.19 and 5,001.94

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Solution

The fourth proportional to 8,778.70, 12,113.19 and 5,001.94 is: 6,901.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778.70 : 12,113.19 = 5,001.94 : x
  2. Step 2: Convert to fraction form
    8,778.70/12,113.19 = 5,001.94/x
  3. Step 3: Cross multiply
    8,778.70x = 12,113.19 × 5,001.94
  4. Step 4: Simplify right side
    8,778.70x = 60,589,449.59
  5. Step 5: Solve for x
    x = 60,589,449.59/8,778.70
  6. Step 6: Final answer
    x = 6,901.87

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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.