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Finding the Fourth Proportional to 248,812.60, 373,218.90 and 71,309.20

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Solution

The fourth proportional to 248,812.60, 373,218.90 and 71,309.20 is: 106,963.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,812.60 : 373,218.90 = 71,309.20 : x
  2. Step 2: Convert to fraction form
    248,812.60/373,218.90 = 71,309.20/x
  3. Step 3: Cross multiply
    248,812.60x = 373,218.90 × 71,309.20
  4. Step 4: Simplify right side
    248,812.60x = 26,613,941,183.88
  5. Step 5: Solve for x
    x = 26,613,941,183.88/248,812.60
  6. Step 6: Final answer
    x = 106,963.80

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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.