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Finding the Fourth Proportional to 74,628.94, 102,812.73 and 51,928.95

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Solution

The fourth proportional to 74,628.94, 102,812.73 and 51,928.95 is: 71,540.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,628.94 : 102,812.73 = 51,928.95 : x
  2. Step 2: Convert to fraction form
    74,628.94/102,812.73 = 51,928.95/x
  3. Step 3: Cross multiply
    74,628.94x = 102,812.73 × 51,928.95
  4. Step 4: Simplify right side
    74,628.94x = 5,338,957,115.53
  5. Step 5: Solve for x
    x = 5,338,957,115.53/74,628.94
  6. Step 6: Final answer
    x = 71,540.04

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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.