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Finding the Fourth Proportional to 311,135.50, 466,703.25 and 89,519.50

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Solution

The fourth proportional to 311,135.50, 466,703.25 and 89,519.50 is: 134,279.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,135.50 : 466,703.25 = 89,519.50 : x
  2. Step 2: Convert to fraction form
    311,135.50/466,703.25 = 89,519.50/x
  3. Step 3: Cross multiply
    311,135.50x = 466,703.25 × 89,519.50
  4. Step 4: Simplify right side
    311,135.50x = 41,779,041,588.38
  5. Step 5: Solve for x
    x = 41,779,041,588.38/311,135.50
  6. Step 6: Final answer
    x = 134,279.25

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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.