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Finding the Fourth Proportional to 268,161.52, 402,241.92 and 68,482.05

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Solution

The fourth proportional to 268,161.52, 402,241.92 and 68,482.05 is: 102,722.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,161.52 : 402,241.92 = 68,482.05 : x
  2. Step 2: Convert to fraction form
    268,161.52/402,241.92 = 68,482.05/x
  3. Step 3: Cross multiply
    268,161.52x = 402,241.92 × 68,482.05
  4. Step 4: Simplify right side
    268,161.52x = 27,546,349,266.33
  5. Step 5: Solve for x
    x = 27,546,349,266.33/268,161.52
  6. Step 6: Final answer
    x = 102,722.98

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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.