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Finding the Fourth Proportional to 638,882.33, 958,211.09 and 233,990.87

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Solution

The fourth proportional to 638,882.33, 958,211.09 and 233,990.87 is: 350,945.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,882.33 : 958,211.09 = 233,990.87 : x
  2. Step 2: Convert to fraction form
    638,882.33/958,211.09 = 233,990.87/x
  3. Step 3: Cross multiply
    638,882.33x = 958,211.09 × 233,990.87
  4. Step 4: Simplify right side
    638,882.33x = 224,212,640,631.74
  5. Step 5: Solve for x
    x = 224,212,640,631.74/638,882.33
  6. Step 6: Final answer
    x = 350,945.13

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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.