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Finding the Fourth Proportional to 58,392.80, 87,610.80 and 18,951.20

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Solution

The fourth proportional to 58,392.80, 87,610.80 and 18,951.20 is: 28,433.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,392.80 : 87,610.80 = 18,951.20 : x
  2. Step 2: Convert to fraction form
    58,392.80/87,610.80 = 18,951.20/x
  3. Step 3: Cross multiply
    58,392.80x = 87,610.80 × 18,951.20
  4. Step 4: Simplify right side
    58,392.80x = 1,660,329,792.96
  5. Step 5: Solve for x
    x = 1,660,329,792.96/58,392.80
  6. Step 6: Final answer
    x = 28,433.81

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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.