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Finding the Fourth Proportional to 185,941.40, 278,793.84 and 85,967.96

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Solution

The fourth proportional to 185,941.40, 278,793.84 and 85,967.96 is: 128,897.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,941.40 : 278,793.84 = 85,967.96 : x
  2. Step 2: Convert to fraction form
    185,941.40/278,793.84 = 85,967.96/x
  3. Step 3: Cross multiply
    185,941.40x = 278,793.84 × 85,967.96
  4. Step 4: Simplify right side
    185,941.40x = 23,967,337,685.37
  5. Step 5: Solve for x
    x = 23,967,337,685.37/185,941.40
  6. Step 6: Final answer
    x = 128,897.26

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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.