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Finding the Fourth Proportional to 141,999.91, 195,960.54 and 78,337.69

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Solution

The fourth proportional to 141,999.91, 195,960.54 and 78,337.69 is: 108,106.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,999.91 : 195,960.54 = 78,337.69 : x
  2. Step 2: Convert to fraction form
    141,999.91/195,960.54 = 78,337.69/x
  3. Step 3: Cross multiply
    141,999.91x = 195,960.54 × 78,337.69
  4. Step 4: Simplify right side
    141,999.91x = 15,351,096,034.75
  5. Step 5: Solve for x
    x = 15,351,096,034.75/141,999.91
  6. Step 6: Final answer
    x = 108,106.38

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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.