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Finding the Fourth Proportional to 560,422.20, 840,633.30 and 186,445.20

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Solution

The fourth proportional to 560,422.20, 840,633.30 and 186,445.20 is: 279,667.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,422.20 : 840,633.30 = 186,445.20 : x
  2. Step 2: Convert to fraction form
    560,422.20/840,633.30 = 186,445.20/x
  3. Step 3: Cross multiply
    560,422.20x = 840,633.30 × 186,445.20
  4. Step 4: Simplify right side
    560,422.20x = 156,732,043,745.16
  5. Step 5: Solve for x
    x = 156,732,043,745.16/560,422.20
  6. Step 6: Final answer
    x = 279,667.80

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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.