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Finding the Fourth Proportional to 268,462.89, 402,591.97 and 118,621.40

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Solution

The fourth proportional to 268,462.89, 402,591.97 and 118,621.40 is: 177,886.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,462.89 : 402,591.97 = 118,621.40 : x
  2. Step 2: Convert to fraction form
    268,462.89/402,591.97 = 118,621.40/x
  3. Step 3: Cross multiply
    268,462.89x = 402,591.97 × 118,621.40
  4. Step 4: Simplify right side
    268,462.89x = 47,756,021,245.47
  5. Step 5: Solve for x
    x = 47,756,021,245.47/268,462.89
  6. Step 6: Final answer
    x = 177,886.86

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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.