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Finding the Fourth Proportional to 153,793.20, 230,754.60 and 83,722.80

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Solution

The fourth proportional to 153,793.20, 230,754.60 and 83,722.80 is: 125,619.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,793.20 : 230,754.60 = 83,722.80 : x
  2. Step 2: Convert to fraction form
    153,793.20/230,754.60 = 83,722.80/x
  3. Step 3: Cross multiply
    153,793.20x = 230,754.60 × 83,722.80
  4. Step 4: Simplify right side
    153,793.20x = 19,319,421,224.88
  5. Step 5: Solve for x
    x = 19,319,421,224.88/153,793.20
  6. Step 6: Final answer
    x = 125,619.48

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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.