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Finding the Fourth Proportional to 74,674.95, 111,754.08 and 71,574.87

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Solution

The fourth proportional to 74,674.95, 111,754.08 and 71,574.87 is: 107,114.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,674.95 : 111,754.08 = 71,574.87 : x
  2. Step 2: Convert to fraction form
    74,674.95/111,754.08 = 71,574.87/x
  3. Step 3: Cross multiply
    74,674.95x = 111,754.08 × 71,574.87
  4. Step 4: Simplify right side
    74,674.95x = 7,998,784,167.05
  5. Step 5: Solve for x
    x = 7,998,784,167.05/74,674.95
  6. Step 6: Final answer
    x = 107,114.70

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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.