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Finding the Fourth Proportional to 248,699.64, 372,939.90 and 71,166.27

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Solution

The fourth proportional to 248,699.64, 372,939.90 and 71,166.27 is: 106,718.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,699.64 : 372,939.90 = 71,166.27 : x
  2. Step 2: Convert to fraction form
    248,699.64/372,939.90 = 71,166.27/x
  3. Step 3: Cross multiply
    248,699.64x = 372,939.90 × 71,166.27
  4. Step 4: Simplify right side
    248,699.64x = 26,540,741,617.17
  5. Step 5: Solve for x
    x = 26,540,741,617.17/248,699.64
  6. Step 6: Final answer
    x = 106,718.05

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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.