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Finding the Fourth Proportional to 247,840, 341,863.12 and 197,658.88

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Solution

The fourth proportional to 247,840, 341,863.12 and 197,658.88 is: 272,644.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,840 : 341,863.12 = 197,658.88 : x
  2. Step 2: Convert to fraction form
    247,840/341,863.12 = 197,658.88/x
  3. Step 3: Cross multiply
    247,840x = 341,863.12 × 197,658.88
  4. Step 4: Simplify right side
    247,840x = 67,572,281,412.51
  5. Step 5: Solve for x
    x = 67,572,281,412.51/247,840
  6. Step 6: Final answer
    x = 272,644.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.