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Finding the Fourth Proportional to 53,658.92, 80,470.16 and 18,590.39

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Solution

The fourth proportional to 53,658.92, 80,470.16 and 18,590.39 is: 27,879.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,658.92 : 80,470.16 = 18,590.39 : x
  2. Step 2: Convert to fraction form
    53,658.92/80,470.16 = 18,590.39/x
  3. Step 3: Cross multiply
    53,658.92x = 80,470.16 × 18,590.39
  4. Step 4: Simplify right side
    53,658.92x = 1,495,971,564.81
  5. Step 5: Solve for x
    x = 1,495,971,564.81/53,658.92
  6. Step 6: Final answer
    x = 27,879.27

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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.