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Finding the Fourth Proportional to 148,867.20, 223,300.80 and 98,128.80

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Solution

The fourth proportional to 148,867.20, 223,300.80 and 98,128.80 is: 147,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,867.20 : 223,300.80 = 98,128.80 : x
  2. Step 2: Convert to fraction form
    148,867.20/223,300.80 = 98,128.80/x
  3. Step 3: Cross multiply
    148,867.20x = 223,300.80 × 98,128.80
  4. Step 4: Simplify right side
    148,867.20x = 21,912,239,543.04
  5. Step 5: Solve for x
    x = 21,912,239,543.04/148,867.20
  6. Step 6: Final answer
    x = 147,193.20

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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.