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Finding the Fourth Proportional to 2,062.54, 3,092.64 and 891.81

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Solution

The fourth proportional to 2,062.54, 3,092.64 and 891.81 is: 1,337.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,062.54 : 3,092.64 = 891.81 : x
  2. Step 2: Convert to fraction form
    2,062.54/3,092.64 = 891.81/x
  3. Step 3: Cross multiply
    2,062.54x = 3,092.64 × 891.81
  4. Step 4: Simplify right side
    2,062.54x = 2,758,031.82
  5. Step 5: Solve for x
    x = 2,758,031.82/2,062.54
  6. Step 6: Final answer
    x = 1,337.20

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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.