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Finding the Fourth Proportional to 311,129.50, 466,694.25 and 89,513.50

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Solution

The fourth proportional to 311,129.50, 466,694.25 and 89,513.50 is: 134,270.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,129.50 : 466,694.25 = 89,513.50 : x
  2. Step 2: Convert to fraction form
    311,129.50/466,694.25 = 89,513.50/x
  3. Step 3: Cross multiply
    311,129.50x = 466,694.25 × 89,513.50
  4. Step 4: Simplify right side
    311,129.50x = 41,775,435,747.38
  5. Step 5: Solve for x
    x = 41,775,435,747.38/311,129.50
  6. Step 6: Final answer
    x = 134,270.25

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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.