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Finding the Fourth Proportional to 7,874.71, 10,865.97 and 4,517.67

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Solution

The fourth proportional to 7,874.71, 10,865.97 and 4,517.67 is: 6,233.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,874.71 : 10,865.97 = 4,517.67 : x
  2. Step 2: Convert to fraction form
    7,874.71/10,865.97 = 4,517.67/x
  3. Step 3: Cross multiply
    7,874.71x = 10,865.97 × 4,517.67
  4. Step 4: Simplify right side
    7,874.71x = 49,088,866.69
  5. Step 5: Solve for x
    x = 49,088,866.69/7,874.71
  6. Step 6: Final answer
    x = 6,233.74

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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.