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Finding the Fourth Proportional to 219,033.38, 328,550.07 and 85,976.30

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Solution

The fourth proportional to 219,033.38, 328,550.07 and 85,976.30 is: 128,964.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,033.38 : 328,550.07 = 85,976.30 : x
  2. Step 2: Convert to fraction form
    219,033.38/328,550.07 = 85,976.30/x
  3. Step 3: Cross multiply
    219,033.38x = 328,550.07 × 85,976.30
  4. Step 4: Simplify right side
    219,033.38x = 28,247,519,383.34
  5. Step 5: Solve for x
    x = 28,247,519,383.34/219,033.38
  6. Step 6: Final answer
    x = 128,964.45

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Similar ratio
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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.