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Finding the Fourth Proportional to 1,516.66, 2,093.01 and 853.50

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Solution

The fourth proportional to 1,516.66, 2,093.01 and 853.50 is: 1,177.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.66 : 2,093.01 = 853.50 : x
  2. Step 2: Convert to fraction form
    1,516.66/2,093.01 = 853.50/x
  3. Step 3: Cross multiply
    1,516.66x = 2,093.01 × 853.50
  4. Step 4: Simplify right side
    1,516.66x = 1,786,388.68
  5. Step 5: Solve for x
    x = 1,786,388.68/1,516.66
  6. Step 6: Final answer
    x = 1,177.85

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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.