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Finding the Fourth Proportional to 638,885.33, 958,215.59 and 233,993.87

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Solution

The fourth proportional to 638,885.33, 958,215.59 and 233,993.87 is: 350,949.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,885.33 : 958,215.59 = 233,993.87 : x
  2. Step 2: Convert to fraction form
    638,885.33/958,215.59 = 233,993.87/x
  3. Step 3: Cross multiply
    638,885.33x = 958,215.59 × 233,993.87
  4. Step 4: Simplify right side
    638,885.33x = 224,216,568,237.39
  5. Step 5: Solve for x
    x = 224,216,568,237.39/638,885.33
  6. Step 6: Final answer
    x = 350,949.63

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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.