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Finding the Fourth Proportional to 58,178.67, 87,212.34 and 18,708

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Solution

The fourth proportional to 58,178.67, 87,212.34 and 18,708 is: 28,044.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,178.67 : 87,212.34 = 18,708 : x
  2. Step 2: Convert to fraction form
    58,178.67/87,212.34 = 18,708/x
  3. Step 3: Cross multiply
    58,178.67x = 87,212.34 × 18,708
  4. Step 4: Simplify right side
    58,178.67x = 1,631,568,456.72
  5. Step 5: Solve for x
    x = 1,631,568,456.72/58,178.67
  6. Step 6: Final answer
    x = 28,044.10

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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.