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Finding the Fourth Proportional to 223,470.30, 335,205.45 and 221,915.10

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Solution

The fourth proportional to 223,470.30, 335,205.45 and 221,915.10 is: 332,872.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,470.30 : 335,205.45 = 221,915.10 : x
  2. Step 2: Convert to fraction form
    223,470.30/335,205.45 = 221,915.10/x
  3. Step 3: Cross multiply
    223,470.30x = 335,205.45 × 221,915.10
  4. Step 4: Simplify right side
    223,470.30x = 74,387,150,957.30
  5. Step 5: Solve for x
    x = 74,387,150,957.30/223,470.30
  6. Step 6: Final answer
    x = 332,872.65

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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.