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Finding the Fourth Proportional to 293,083.20, 439,624.80 and 275,587.20

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Solution

The fourth proportional to 293,083.20, 439,624.80 and 275,587.20 is: 413,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,083.20 : 439,624.80 = 275,587.20 : x
  2. Step 2: Convert to fraction form
    293,083.20/439,624.80 = 275,587.20/x
  3. Step 3: Cross multiply
    293,083.20x = 439,624.80 × 275,587.20
  4. Step 4: Simplify right side
    293,083.20x = 121,154,967,682.56
  5. Step 5: Solve for x
    x = 121,154,967,682.56/293,083.20
  6. Step 6: Final answer
    x = 413,380.80

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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.