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Finding the Fourth Proportional to 354,774.90, 532,551.15 and 221,805.30

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Solution

The fourth proportional to 354,774.90, 532,551.15 and 221,805.30 is: 332,951.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,774.90 : 532,551.15 = 221,805.30 : x
  2. Step 2: Convert to fraction form
    354,774.90/532,551.15 = 221,805.30/x
  3. Step 3: Cross multiply
    354,774.90x = 532,551.15 × 221,805.30
  4. Step 4: Simplify right side
    354,774.90x = 118,122,667,591.10
  5. Step 5: Solve for x
    x = 118,122,667,591.10/354,774.90
  6. Step 6: Final answer
    x = 332,951.03

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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.