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Finding the Fourth Proportional to 310,939.20, 466,408.80 and 248,731.20

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Solution

The fourth proportional to 310,939.20, 466,408.80 and 248,731.20 is: 373,096.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,939.20 : 466,408.80 = 248,731.20 : x
  2. Step 2: Convert to fraction form
    310,939.20/466,408.80 = 248,731.20/x
  3. Step 3: Cross multiply
    310,939.20x = 466,408.80 × 248,731.20
  4. Step 4: Simplify right side
    310,939.20x = 116,010,420,514.56
  5. Step 5: Solve for x
    x = 116,010,420,514.56/310,939.20
  6. Step 6: Final answer
    x = 373,096.80

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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.