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Finding the Fourth Proportional to 220,358.80, 329,663.40 and 191,101.60

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Solution

The fourth proportional to 220,358.80, 329,663.40 and 191,101.60 is: 285,893.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,358.80 : 329,663.40 = 191,101.60 : x
  2. Step 2: Convert to fraction form
    220,358.80/329,663.40 = 191,101.60/x
  3. Step 3: Cross multiply
    220,358.80x = 329,663.40 × 191,101.60
  4. Step 4: Simplify right side
    220,358.80x = 62,999,203,201.44
  5. Step 5: Solve for x
    x = 62,999,203,201.44/220,358.80
  6. Step 6: Final answer
    x = 285,893.75

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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.