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Finding the Fourth Proportional to 223,876.80, 335,815.20 and 211,046.40

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Solution

The fourth proportional to 223,876.80, 335,815.20 and 211,046.40 is: 316,569.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,876.80 : 335,815.20 = 211,046.40 : x
  2. Step 2: Convert to fraction form
    223,876.80/335,815.20 = 211,046.40/x
  3. Step 3: Cross multiply
    223,876.80x = 335,815.20 × 211,046.40
  4. Step 4: Simplify right side
    223,876.80x = 70,872,589,025.28
  5. Step 5: Solve for x
    x = 70,872,589,025.28/223,876.80
  6. Step 6: Final answer
    x = 316,569.60

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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.