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Finding the Fourth Proportional to 7,874.46, 10,866.69 and 4,337.55

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Solution

The fourth proportional to 7,874.46, 10,866.69 and 4,337.55 is: 5,985.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,874.46 : 10,866.69 = 4,337.55 : x
  2. Step 2: Convert to fraction form
    7,874.46/10,866.69 = 4,337.55/x
  3. Step 3: Cross multiply
    7,874.46x = 10,866.69 × 4,337.55
  4. Step 4: Simplify right side
    7,874.46x = 47,134,811.21
  5. Step 5: Solve for x
    x = 47,134,811.21/7,874.46
  6. Step 6: Final answer
    x = 5,985.78

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.