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Finding the Fourth Proportional to 638,234.20, 957,351.30 and 189,024.40

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Solution

The fourth proportional to 638,234.20, 957,351.30 and 189,024.40 is: 283,536.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,234.20 : 957,351.30 = 189,024.40 : x
  2. Step 2: Convert to fraction form
    638,234.20/957,351.30 = 189,024.40/x
  3. Step 3: Cross multiply
    638,234.20x = 957,351.30 × 189,024.40
  4. Step 4: Simplify right side
    638,234.20x = 180,962,755,071.72
  5. Step 5: Solve for x
    x = 180,962,755,071.72/638,234.20
  6. Step 6: Final answer
    x = 283,536.60

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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.