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Finding the Fourth Proportional to 74,791.65, 103,002.53 and 73,158.69

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Solution

The fourth proportional to 74,791.65, 103,002.53 and 73,158.69 is: 100,753.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,791.65 : 103,002.53 = 73,158.69 : x
  2. Step 2: Convert to fraction form
    74,791.65/103,002.53 = 73,158.69/x
  3. Step 3: Cross multiply
    74,791.65x = 103,002.53 × 73,158.69
  4. Step 4: Simplify right side
    74,791.65x = 7,535,529,795.69
  5. Step 5: Solve for x
    x = 7,535,529,795.69/74,791.65
  6. Step 6: Final answer
    x = 100,753.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.