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Finding the Fourth Proportional to 185,592.80, 278,389.20 and 92,280.80

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Solution

The fourth proportional to 185,592.80, 278,389.20 and 92,280.80 is: 138,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,592.80 : 278,389.20 = 92,280.80 : x
  2. Step 2: Convert to fraction form
    185,592.80/278,389.20 = 92,280.80/x
  3. Step 3: Cross multiply
    185,592.80x = 278,389.20 × 92,280.80
  4. Step 4: Simplify right side
    185,592.80x = 25,689,978,087.36
  5. Step 5: Solve for x
    x = 25,689,978,087.36/185,592.80
  6. Step 6: Final answer
    x = 138,421.20

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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.