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Finding the Fourth Proportional to 272,597.40, 408,721.02 and 178,993.80

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Solution

The fourth proportional to 272,597.40, 408,721.02 and 178,993.80 is: 268,375.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,597.40 : 408,721.02 = 178,993.80 : x
  2. Step 2: Convert to fraction form
    272,597.40/408,721.02 = 178,993.80/x
  3. Step 3: Cross multiply
    272,597.40x = 408,721.02 × 178,993.80
  4. Step 4: Simplify right side
    272,597.40x = 73,158,528,509.68
  5. Step 5: Solve for x
    x = 73,158,528,509.68/272,597.40
  6. Step 6: Final answer
    x = 268,375.74

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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.