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Finding the Fourth Proportional to 8,861.60, 12,229.07 and 4,882.73

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Solution

The fourth proportional to 8,861.60, 12,229.07 and 4,882.73 is: 6,738.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.60 : 12,229.07 = 4,882.73 : x
  2. Step 2: Convert to fraction form
    8,861.60/12,229.07 = 4,882.73/x
  3. Step 3: Cross multiply
    8,861.60x = 12,229.07 × 4,882.73
  4. Step 4: Simplify right side
    8,861.60x = 59,711,161.40
  5. Step 5: Solve for x
    x = 59,711,161.40/8,861.60
  6. Step 6: Final answer
    x = 6,738.19

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Find fourth proportional to 4,430.80, 6,114.53 and 2,441.36
Half scale
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Double scale
Find fourth proportional to 8,862.60, 12,230.45 and 4,883.73
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.