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Finding the Fourth Proportional to 84,616.16, 126,923.24 and 20,574.68

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Solution

The fourth proportional to 84,616.16, 126,923.24 and 20,574.68 is: 30,861.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,616.16 : 126,923.24 = 20,574.68 : x
  2. Step 2: Convert to fraction form
    84,616.16/126,923.24 = 20,574.68/x
  3. Step 3: Cross multiply
    84,616.16x = 126,923.24 × 20,574.68
  4. Step 4: Simplify right side
    84,616.16x = 2,611,404,464.38
  5. Step 5: Solve for x
    x = 2,611,404,464.38/84,616.16
  6. Step 6: Final answer
    x = 30,861.77

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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.