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Finding the Fourth Proportional to 8,759.70, 13,139.55 and 4,823.10

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Solution

The fourth proportional to 8,759.70, 13,139.55 and 4,823.10 is: 7,234.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,759.70 : 13,139.55 = 4,823.10 : x
  2. Step 2: Convert to fraction form
    8,759.70/13,139.55 = 4,823.10/x
  3. Step 3: Cross multiply
    8,759.70x = 13,139.55 × 4,823.10
  4. Step 4: Simplify right side
    8,759.70x = 63,373,363.61
  5. Step 5: Solve for x
    x = 63,373,363.61/8,759.70
  6. Step 6: Final answer
    x = 7,234.65

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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.