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Finding the Fourth Proportional to 16,149.60, 22,281.60 and 9,861.60

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Solution

The fourth proportional to 16,149.60, 22,281.60 and 9,861.60 is: 13,606.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,149.60 : 22,281.60 = 9,861.60 : x
  2. Step 2: Convert to fraction form
    16,149.60/22,281.60 = 9,861.60/x
  3. Step 3: Cross multiply
    16,149.60x = 22,281.60 × 9,861.60
  4. Step 4: Simplify right side
    16,149.60x = 219,732,226.56
  5. Step 5: Solve for x
    x = 219,732,226.56/16,149.60
  6. Step 6: Final answer
    x = 13,606.05

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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.