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Finding the Fourth Proportional to 619,251.60, 928,658.70 and 219,905.40

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Solution

The fourth proportional to 619,251.60, 928,658.70 and 219,905.40 is: 329,780.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,251.60 : 928,658.70 = 219,905.40 : x
  2. Step 2: Convert to fraction form
    619,251.60/928,658.70 = 219,905.40/x
  3. Step 3: Cross multiply
    619,251.60x = 928,658.70 × 219,905.40
  4. Step 4: Simplify right side
    619,251.60x = 204,217,062,886.98
  5. Step 5: Solve for x
    x = 204,217,062,886.98/619,251.60
  6. Step 6: Final answer
    x = 329,780.44

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1.5x scale

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.