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Finding the Fourth Proportional to 216,743.61, 325,034.78 and 74,548.97

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Solution

The fourth proportional to 216,743.61, 325,034.78 and 74,548.97 is: 111,795.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,743.61 : 325,034.78 = 74,548.97 : x
  2. Step 2: Convert to fraction form
    216,743.61/325,034.78 = 74,548.97/x
  3. Step 3: Cross multiply
    216,743.61x = 325,034.78 × 74,548.97
  4. Step 4: Simplify right side
    216,743.61x = 24,231,008,503.02
  5. Step 5: Solve for x
    x = 24,231,008,503.02/216,743.61
  6. Step 6: Final answer
    x = 111,795.72

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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.