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Finding the Fourth Proportional to 74,192.60, 111,255.72 and 53,328.56

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Solution

The fourth proportional to 74,192.60, 111,255.72 and 53,328.56 is: 79,968.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,192.60 : 111,255.72 = 53,328.56 : x
  2. Step 2: Convert to fraction form
    74,192.60/111,255.72 = 53,328.56/x
  3. Step 3: Cross multiply
    74,192.60x = 111,255.72 × 53,328.56
  4. Step 4: Simplify right side
    74,192.60x = 5,933,107,339.36
  5. Step 5: Solve for x
    x = 5,933,107,339.36/74,192.60
  6. Step 6: Final answer
    x = 79,968.99

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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.