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Finding the Fourth Proportional to 186,674.56, 279,899.24 and 74,372.11

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Solution

The fourth proportional to 186,674.56, 279,899.24 and 74,372.11 is: 111,513.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,674.56 : 279,899.24 = 74,372.11 : x
  2. Step 2: Convert to fraction form
    186,674.56/279,899.24 = 74,372.11/x
  3. Step 3: Cross multiply
    186,674.56x = 279,899.24 × 74,372.11
  4. Step 4: Simplify right side
    186,674.56x = 20,816,697,066.20
  5. Step 5: Solve for x
    x = 20,816,697,066.20/186,674.56
  6. Step 6: Final answer
    x = 111,513.30

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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.