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Finding the Fourth Proportional to 94,581.80, 141,872.70 and 38,421.80

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Solution

The fourth proportional to 94,581.80, 141,872.70 and 38,421.80 is: 57,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,581.80 : 141,872.70 = 38,421.80 : x
  2. Step 2: Convert to fraction form
    94,581.80/141,872.70 = 38,421.80/x
  3. Step 3: Cross multiply
    94,581.80x = 141,872.70 × 38,421.80
  4. Step 4: Simplify right side
    94,581.80x = 5,451,004,504.86
  5. Step 5: Solve for x
    x = 5,451,004,504.86/94,581.80
  6. Step 6: Final answer
    x = 57,632.70

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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.