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Finding the Fourth Proportional to 74,967.39, 103,414.05 and 48,079.98

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Solution

The fourth proportional to 74,967.39, 103,414.05 and 48,079.98 is: 66,324.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,967.39 : 103,414.05 = 48,079.98 : x
  2. Step 2: Convert to fraction form
    74,967.39/103,414.05 = 48,079.98/x
  3. Step 3: Cross multiply
    74,967.39x = 103,414.05 × 48,079.98
  4. Step 4: Simplify right side
    74,967.39x = 4,972,145,455.72
  5. Step 5: Solve for x
    x = 4,972,145,455.72/74,967.39
  6. Step 6: Final answer
    x = 66,324.11

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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.