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Finding the Fourth Proportional to 373,355.20, 560,032.80 and 215,891.20

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Solution

The fourth proportional to 373,355.20, 560,032.80 and 215,891.20 is: 323,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,355.20 : 560,032.80 = 215,891.20 : x
  2. Step 2: Convert to fraction form
    373,355.20/560,032.80 = 215,891.20/x
  3. Step 3: Cross multiply
    373,355.20x = 560,032.80 × 215,891.20
  4. Step 4: Simplify right side
    373,355.20x = 120,906,153,231.36
  5. Step 5: Solve for x
    x = 120,906,153,231.36/373,355.20
  6. Step 6: Final answer
    x = 323,836.80

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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.