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Finding the Fourth Proportional to 55,149.20, 82,723.80 and 15,705.80

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Solution

The fourth proportional to 55,149.20, 82,723.80 and 15,705.80 is: 23,558.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,149.20 : 82,723.80 = 15,705.80 : x
  2. Step 2: Convert to fraction form
    55,149.20/82,723.80 = 15,705.80/x
  3. Step 3: Cross multiply
    55,149.20x = 82,723.80 × 15,705.80
  4. Step 4: Simplify right side
    55,149.20x = 1,299,243,458.04
  5. Step 5: Solve for x
    x = 1,299,243,458.04/55,149.20
  6. Step 6: Final answer
    x = 23,558.70

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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.