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Finding the Fourth Proportional to 1,167.27, 1,749.96 and 436.74

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Solution

The fourth proportional to 1,167.27, 1,749.96 and 436.74 is: 654.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167.27 : 1,749.96 = 436.74 : x
  2. Step 2: Convert to fraction form
    1,167.27/1,749.96 = 436.74/x
  3. Step 3: Cross multiply
    1,167.27x = 1,749.96 × 436.74
  4. Step 4: Simplify right side
    1,167.27x = 764,277.53
  5. Step 5: Solve for x
    x = 764,277.53/1,167.27
  6. Step 6: Final answer
    x = 654.76

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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.