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Finding the Fourth Proportional to 153,959.20, 230,938.80 and 104,192.80

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Solution

The fourth proportional to 153,959.20, 230,938.80 and 104,192.80 is: 156,289.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,959.20 : 230,938.80 = 104,192.80 : x
  2. Step 2: Convert to fraction form
    153,959.20/230,938.80 = 104,192.80/x
  3. Step 3: Cross multiply
    153,959.20x = 230,938.80 × 104,192.80
  4. Step 4: Simplify right side
    153,959.20x = 24,062,160,200.64
  5. Step 5: Solve for x
    x = 24,062,160,200.64/153,959.20
  6. Step 6: Final answer
    x = 156,289.20

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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.