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Finding the Fourth Proportional to 638,229.53, 957,354.21 and 188,995.83

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Solution

The fourth proportional to 638,229.53, 957,354.21 and 188,995.83 is: 283,496.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,229.53 : 957,354.21 = 188,995.83 : x
  2. Step 2: Convert to fraction form
    638,229.53/957,354.21 = 188,995.83/x
  3. Step 3: Cross multiply
    638,229.53x = 957,354.21 × 188,995.83
  4. Step 4: Simplify right side
    638,229.53x = 180,935,953,522.94
  5. Step 5: Solve for x
    x = 180,935,953,522.94/638,229.53
  6. Step 6: Final answer
    x = 283,496.68

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Half scale
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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.