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Finding the Fourth Proportional to 74,736.52, 112,133.94 and 43,129.89

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Solution

The fourth proportional to 74,736.52, 112,133.94 and 43,129.89 is: 64,711.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,736.52 : 112,133.94 = 43,129.89 : x
  2. Step 2: Convert to fraction form
    74,736.52/112,133.94 = 43,129.89/x
  3. Step 3: Cross multiply
    74,736.52x = 112,133.94 × 43,129.89
  4. Step 4: Simplify right side
    74,736.52x = 4,836,324,497.47
  5. Step 5: Solve for x
    x = 4,836,324,497.47/74,736.52
  6. Step 6: Final answer
    x = 64,711.66

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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.