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Finding the Fourth Proportional to 221,663.60, 332,495.40 and 197,169.20

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Solution

The fourth proportional to 221,663.60, 332,495.40 and 197,169.20 is: 295,753.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,663.60 : 332,495.40 = 197,169.20 : x
  2. Step 2: Convert to fraction form
    221,663.60/332,495.40 = 197,169.20/x
  3. Step 3: Cross multiply
    221,663.60x = 332,495.40 × 197,169.20
  4. Step 4: Simplify right side
    221,663.60x = 65,557,852,021.68
  5. Step 5: Solve for x
    x = 65,557,852,021.68/221,663.60
  6. Step 6: Final answer
    x = 295,753.80

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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.