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Finding the Fourth Proportional to 85,626.60, 128,439.90 and 22,446.60

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Solution

The fourth proportional to 85,626.60, 128,439.90 and 22,446.60 is: 33,669.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,626.60 : 128,439.90 = 22,446.60 : x
  2. Step 2: Convert to fraction form
    85,626.60/128,439.90 = 22,446.60/x
  3. Step 3: Cross multiply
    85,626.60x = 128,439.90 × 22,446.60
  4. Step 4: Simplify right side
    85,626.60x = 2,883,039,059.34
  5. Step 5: Solve for x
    x = 2,883,039,059.34/85,626.60
  6. Step 6: Final answer
    x = 33,669.90

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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.