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Finding the Fourth Proportional to 74,809, 103,236.42 and 41,275

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Solution

The fourth proportional to 74,809, 103,236.42 and 41,275 is: 56,959.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,809 : 103,236.42 = 41,275 : x
  2. Step 2: Convert to fraction form
    74,809/103,236.42 = 41,275/x
  3. Step 3: Cross multiply
    74,809x = 103,236.42 × 41,275
  4. Step 4: Simplify right side
    74,809x = 4,261,083,235.50
  5. Step 5: Solve for x
    x = 4,261,083,235.50/74,809
  6. Step 6: Final answer
    x = 56,959.50

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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.