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Finding the Fourth Proportional to 141,863.10, 212,794.65 and 71,879.10

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Solution

The fourth proportional to 141,863.10, 212,794.65 and 71,879.10 is: 107,818.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,863.10 : 212,794.65 = 71,879.10 : x
  2. Step 2: Convert to fraction form
    141,863.10/212,794.65 = 71,879.10/x
  3. Step 3: Cross multiply
    141,863.10x = 212,794.65 × 71,879.10
  4. Step 4: Simplify right side
    141,863.10x = 15,295,487,926.82
  5. Step 5: Solve for x
    x = 15,295,487,926.82/141,863.10
  6. Step 6: Final answer
    x = 107,818.65

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1.5x scale

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.