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Finding the Fourth Proportional to 1,313.24, 1,964.04 and 1,167.92

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Solution

The fourth proportional to 1,313.24, 1,964.04 and 1,167.92 is: 1,746.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313.24 : 1,964.04 = 1,167.92 : x
  2. Step 2: Convert to fraction form
    1,313.24/1,964.04 = 1,167.92/x
  3. Step 3: Cross multiply
    1,313.24x = 1,964.04 × 1,167.92
  4. Step 4: Simplify right side
    1,313.24x = 2,293,841.60
  5. Step 5: Solve for x
    x = 2,293,841.60/1,313.24
  6. Step 6: Final answer
    x = 1,746.70

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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.