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Finding the Fourth Proportional to 565,321.20, 847,981.80 and 191,344.20

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Solution

The fourth proportional to 565,321.20, 847,981.80 and 191,344.20 is: 287,016.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,321.20 : 847,981.80 = 191,344.20 : x
  2. Step 2: Convert to fraction form
    565,321.20/847,981.80 = 191,344.20/x
  3. Step 3: Cross multiply
    565,321.20x = 847,981.80 × 191,344.20
  4. Step 4: Simplify right side
    565,321.20x = 162,256,399,135.56
  5. Step 5: Solve for x
    x = 162,256,399,135.56/565,321.20
  6. Step 6: Final answer
    x = 287,016.30

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Double scale
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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.