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Finding the Fourth Proportional to 489,139.26, 732,523.86 and 248,620.56

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Solution

The fourth proportional to 489,139.26, 732,523.86 and 248,620.56 is: 372,328.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,139.26 : 732,523.86 = 248,620.56 : x
  2. Step 2: Convert to fraction form
    489,139.26/732,523.86 = 248,620.56/x
  3. Step 3: Cross multiply
    489,139.26x = 732,523.86 × 248,620.56
  4. Step 4: Simplify right side
    489,139.26x = 182,120,492,286.56
  5. Step 5: Solve for x
    x = 182,120,492,286.56/489,139.26
  6. Step 6: Final answer
    x = 372,328.51

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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.