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Finding the Fourth Proportional to 74,487.87, 111,696.64 and 27,069.93

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Solution

The fourth proportional to 74,487.87, 111,696.64 and 27,069.93 is: 40,592.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,487.87 : 111,696.64 = 27,069.93 : x
  2. Step 2: Convert to fraction form
    74,487.87/111,696.64 = 27,069.93/x
  3. Step 3: Cross multiply
    74,487.87x = 111,696.64 × 27,069.93
  4. Step 4: Simplify right side
    74,487.87x = 3,023,620,158.36
  5. Step 5: Solve for x
    x = 3,023,620,158.36/74,487.87
  6. Step 6: Final answer
    x = 40,592.11

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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.