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Finding the Fourth Proportional to 323,633.10, 485,371.86 and 165,780.30

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Solution

The fourth proportional to 323,633.10, 485,371.86 and 165,780.30 is: 248,630.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,633.10 : 485,371.86 = 165,780.30 : x
  2. Step 2: Convert to fraction form
    323,633.10/485,371.86 = 165,780.30/x
  3. Step 3: Cross multiply
    323,633.10x = 485,371.86 × 165,780.30
  4. Step 4: Simplify right side
    323,633.10x = 80,465,092,562.36
  5. Step 5: Solve for x
    x = 80,465,092,562.36/323,633.10
  6. Step 6: Final answer
    x = 248,630.60

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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.