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Finding the Fourth Proportional to 422,372.79, 633,767.35 and 197,748.43

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Solution

The fourth proportional to 422,372.79, 633,767.35 and 197,748.43 is: 296,720.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,372.79 : 633,767.35 = 197,748.43 : x
  2. Step 2: Convert to fraction form
    422,372.79/633,767.35 = 197,748.43/x
  3. Step 3: Cross multiply
    422,372.79x = 633,767.35 × 197,748.43
  4. Step 4: Simplify right side
    422,372.79x = 125,326,498,447.76
  5. Step 5: Solve for x
    x = 125,326,498,447.76/422,372.79
  6. Step 6: Final answer
    x = 296,720.10

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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.