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Finding the Fourth Proportional to 74,659.20, 103,028.80 and 41,124.48

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Solution

The fourth proportional to 74,659.20, 103,028.80 and 41,124.48 is: 56,751.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,659.20 : 103,028.80 = 41,124.48 : x
  2. Step 2: Convert to fraction form
    74,659.20/103,028.80 = 41,124.48/x
  3. Step 3: Cross multiply
    74,659.20x = 103,028.80 × 41,124.48
  4. Step 4: Simplify right side
    74,659.20x = 4,237,005,825.02
  5. Step 5: Solve for x
    x = 4,237,005,825.02/74,659.20
  6. Step 6: Final answer
    x = 56,751.29

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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.