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Finding the Fourth Proportional to 79,009.92, 118,514.88 and 31,646.52

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Solution

The fourth proportional to 79,009.92, 118,514.88 and 31,646.52 is: 47,469.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,009.92 : 118,514.88 = 31,646.52 : x
  2. Step 2: Convert to fraction form
    79,009.92/118,514.88 = 31,646.52/x
  3. Step 3: Cross multiply
    79,009.92x = 118,514.88 × 31,646.52
  4. Step 4: Simplify right side
    79,009.92x = 3,750,583,520.22
  5. Step 5: Solve for x
    x = 3,750,583,520.22/79,009.92
  6. Step 6: Final answer
    x = 47,469.78

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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.