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Finding the Fourth Proportional to 486,060.86, 729,091.37 and 131,074.92

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Solution

The fourth proportional to 486,060.86, 729,091.37 and 131,074.92 is: 196,612.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,060.86 : 729,091.37 = 131,074.92 : x
  2. Step 2: Convert to fraction form
    486,060.86/729,091.37 = 131,074.92/x
  3. Step 3: Cross multiply
    486,060.86x = 729,091.37 × 131,074.92
  4. Step 4: Simplify right side
    486,060.86x = 95,565,592,340.07
  5. Step 5: Solve for x
    x = 95,565,592,340.07/486,060.86
  6. Step 6: Final answer
    x = 196,612.40

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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.