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Finding the Fourth Proportional to 79,471.96, 109,678.92 and 45,473.68

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Solution

The fourth proportional to 79,471.96, 109,678.92 and 45,473.68 is: 62,758.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,471.96 : 109,678.92 = 45,473.68 : x
  2. Step 2: Convert to fraction form
    79,471.96/109,678.92 = 45,473.68/x
  3. Step 3: Cross multiply
    79,471.96x = 109,678.92 × 45,473.68
  4. Step 4: Simplify right side
    79,471.96x = 4,987,504,110.83
  5. Step 5: Solve for x
    x = 4,987,504,110.83/79,471.96
  6. Step 6: Final answer
    x = 62,758.04

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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.