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Finding the Fourth Proportional to 639,331.10, 958,889.72 and 234,439.64

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Solution

The fourth proportional to 639,331.10, 958,889.72 and 234,439.64 is: 351,620.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,331.10 : 958,889.72 = 234,439.64 : x
  2. Step 2: Convert to fraction form
    639,331.10/958,889.72 = 234,439.64/x
  3. Step 3: Cross multiply
    639,331.10x = 958,889.72 × 234,439.64
  4. Step 4: Simplify right side
    639,331.10x = 224,801,760,756.50
  5. Step 5: Solve for x
    x = 224,801,760,756.50/639,331.10
  6. Step 6: Final answer
    x = 351,620.25

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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.