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Finding the Fourth Proportional to 1,196.64, 1,650.91 and 882.65

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Solution

The fourth proportional to 1,196.64, 1,650.91 and 882.65 is: 1,217.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,196.64 : 1,650.91 = 882.65 : x
  2. Step 2: Convert to fraction form
    1,196.64/1,650.91 = 882.65/x
  3. Step 3: Cross multiply
    1,196.64x = 1,650.91 × 882.65
  4. Step 4: Simplify right side
    1,196.64x = 1,457,175.71
  5. Step 5: Solve for x
    x = 1,457,175.71/1,196.64
  6. Step 6: Final answer
    x = 1,217.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.