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Finding the Fourth Proportional to 74,680.84, 112,021.26 and 61,480.27

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Solution

The fourth proportional to 74,680.84, 112,021.26 and 61,480.27 is: 92,220.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,680.84 : 112,021.26 = 61,480.27 : x
  2. Step 2: Convert to fraction form
    74,680.84/112,021.26 = 61,480.27/x
  3. Step 3: Cross multiply
    74,680.84x = 112,021.26 × 61,480.27
  4. Step 4: Simplify right side
    74,680.84x = 6,887,097,310.54
  5. Step 5: Solve for x
    x = 6,887,097,310.54/74,680.84
  6. Step 6: Final answer
    x = 92,220.41

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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.