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Finding the Fourth Proportional to 248,423.20, 372,649.20 and 70,943.20

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Solution

The fourth proportional to 248,423.20, 372,649.20 and 70,943.20 is: 106,418.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,423.20 : 372,649.20 = 70,943.20 : x
  2. Step 2: Convert to fraction form
    248,423.20/372,649.20 = 70,943.20/x
  3. Step 3: Cross multiply
    248,423.20x = 372,649.20 × 70,943.20
  4. Step 4: Simplify right side
    248,423.20x = 26,436,926,725.44
  5. Step 5: Solve for x
    x = 26,436,926,725.44/248,423.20
  6. Step 6: Final answer
    x = 106,418.91

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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.