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Finding the Fourth Proportional to 316,188.90, 436,335.92 and 188,839.88

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Solution

The fourth proportional to 316,188.90, 436,335.92 and 188,839.88 is: 260,596.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,188.90 : 436,335.92 = 188,839.88 : x
  2. Step 2: Convert to fraction form
    316,188.90/436,335.92 = 188,839.88/x
  3. Step 3: Cross multiply
    316,188.90x = 436,335.92 × 188,839.88
  4. Step 4: Simplify right side
    316,188.90x = 82,397,622,772.49
  5. Step 5: Solve for x
    x = 82,397,622,772.49/316,188.90
  6. Step 6: Final answer
    x = 260,596.19

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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.