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Finding the Fourth Proportional to 1,192.26, 1,785.96 and 959.88

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Solution

The fourth proportional to 1,192.26, 1,785.96 and 959.88 is: 1,437.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.26 : 1,785.96 = 959.88 : x
  2. Step 2: Convert to fraction form
    1,192.26/1,785.96 = 959.88/x
  3. Step 3: Cross multiply
    1,192.26x = 1,785.96 × 959.88
  4. Step 4: Simplify right side
    1,192.26x = 1,714,307.28
  5. Step 5: Solve for x
    x = 1,714,307.28/1,192.26
  6. Step 6: Final answer
    x = 1,437.86

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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.