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Finding the Fourth Proportional to 2,083.64, 3,125.10 and 696.83

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Solution

The fourth proportional to 2,083.64, 3,125.10 and 696.83 is: 1,045.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,083.64 : 3,125.10 = 696.83 : x
  2. Step 2: Convert to fraction form
    2,083.64/3,125.10 = 696.83/x
  3. Step 3: Cross multiply
    2,083.64x = 3,125.10 × 696.83
  4. Step 4: Simplify right side
    2,083.64x = 2,177,647.81
  5. Step 5: Solve for x
    x = 2,177,647.81/2,083.64
  6. Step 6: Final answer
    x = 1,045.12

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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.