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Finding the Fourth Proportional to 229,321.62, 316,449.72 and 127,340.88

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Solution

The fourth proportional to 229,321.62, 316,449.72 and 127,340.88 is: 175,722.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,321.62 : 316,449.72 = 127,340.88 : x
  2. Step 2: Convert to fraction form
    229,321.62/316,449.72 = 127,340.88/x
  3. Step 3: Cross multiply
    229,321.62x = 316,449.72 × 127,340.88
  4. Step 4: Simplify right side
    229,321.62x = 40,296,985,820.55
  5. Step 5: Solve for x
    x = 40,296,985,820.55/229,321.62
  6. Step 6: Final answer
    x = 175,722.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.