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Finding the Fourth Proportional to 185,708.67, 278,673.69 and 67,389.24

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Solution

The fourth proportional to 185,708.67, 278,673.69 and 67,389.24 is: 101,124.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,708.67 : 278,673.69 = 67,389.24 : x
  2. Step 2: Convert to fraction form
    185,708.67/278,673.69 = 67,389.24/x
  3. Step 3: Cross multiply
    185,708.67x = 278,673.69 × 67,389.24
  4. Step 4: Simplify right side
    185,708.67x = 18,779,608,177.10
  5. Step 5: Solve for x
    x = 18,779,608,177.10/185,708.67
  6. Step 6: Final answer
    x = 101,124.02

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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.