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Finding the Fourth Proportional to 74,100.90, 102,231.32 and 48,621.33

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Solution

The fourth proportional to 74,100.90, 102,231.32 and 48,621.33 is: 67,079.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,100.90 : 102,231.32 = 48,621.33 : x
  2. Step 2: Convert to fraction form
    74,100.90/102,231.32 = 48,621.33/x
  3. Step 3: Cross multiply
    74,100.90x = 102,231.32 × 48,621.33
  4. Step 4: Simplify right side
    74,100.90x = 4,970,622,502.95
  5. Step 5: Solve for x
    x = 4,970,622,502.95/74,100.90
  6. Step 6: Final answer
    x = 67,079.11

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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.