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Finding the Fourth Proportional to 139,562.38, 192,514.10 and 87,797.16

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Solution

The fourth proportional to 139,562.38, 192,514.10 and 87,797.16 is: 121,108.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,562.38 : 192,514.10 = 87,797.16 : x
  2. Step 2: Convert to fraction form
    139,562.38/192,514.10 = 87,797.16/x
  3. Step 3: Cross multiply
    139,562.38x = 192,514.10 × 87,797.16
  4. Step 4: Simplify right side
    139,562.38x = 16,902,191,370.85
  5. Step 5: Solve for x
    x = 16,902,191,370.85/139,562.38
  6. Step 6: Final answer
    x = 121,108.50

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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.