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Finding the Fourth Proportional to 614,221.80, 921,332.70 and 193,540.20

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Solution

The fourth proportional to 614,221.80, 921,332.70 and 193,540.20 is: 290,310.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,221.80 : 921,332.70 = 193,540.20 : x
  2. Step 2: Convert to fraction form
    614,221.80/921,332.70 = 193,540.20/x
  3. Step 3: Cross multiply
    614,221.80x = 921,332.70 × 193,540.20
  4. Step 4: Simplify right side
    614,221.80x = 178,314,915,024.54
  5. Step 5: Solve for x
    x = 178,314,915,024.54/614,221.80
  6. Step 6: Final answer
    x = 290,310.30

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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.