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Finding the Fourth Proportional to 268,100.84, 402,150.92 and 68,421.23

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Solution

The fourth proportional to 268,100.84, 402,150.92 and 68,421.23 is: 102,631.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,100.84 : 402,150.92 = 68,421.23 : x
  2. Step 2: Convert to fraction form
    268,100.84/402,150.92 = 68,421.23/x
  3. Step 3: Cross multiply
    268,100.84x = 402,150.92 × 68,421.23
  4. Step 4: Simplify right side
    268,100.84x = 27,515,660,592.03
  5. Step 5: Solve for x
    x = 27,515,660,592.03/268,100.84
  6. Step 6: Final answer
    x = 102,631.76

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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.