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Finding the Fourth Proportional to 53,658.67, 80,469.78 and 18,590.14

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Solution

The fourth proportional to 53,658.67, 80,469.78 and 18,590.14 is: 27,878.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,658.67 : 80,469.78 = 18,590.14 : x
  2. Step 2: Convert to fraction form
    53,658.67/80,469.78 = 18,590.14/x
  3. Step 3: Cross multiply
    53,658.67x = 80,469.78 × 18,590.14
  4. Step 4: Simplify right side
    53,658.67x = 1,495,944,475.97
  5. Step 5: Solve for x
    x = 1,495,944,475.97/53,658.67
  6. Step 6: Final answer
    x = 27,878.90

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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.