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Finding the Fourth Proportional to 143,708.57, 215,589.01 and 48,933.91

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Solution

The fourth proportional to 143,708.57, 215,589.01 and 48,933.91 is: 73,409.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,708.57 : 215,589.01 = 48,933.91 : x
  2. Step 2: Convert to fraction form
    143,708.57/215,589.01 = 48,933.91/x
  3. Step 3: Cross multiply
    143,708.57x = 215,589.01 × 48,933.91
  4. Step 4: Simplify right side
    143,708.57x = 10,549,613,212.33
  5. Step 5: Solve for x
    x = 10,549,613,212.33/143,708.57
  6. Step 6: Final answer
    x = 73,409.77

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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.