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Finding the Fourth Proportional to 2,083.68, 3,125.43 and 850.68

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Solution

The fourth proportional to 2,083.68, 3,125.43 and 850.68 is: 1,275.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,083.68 : 3,125.43 = 850.68 : x
  2. Step 2: Convert to fraction form
    2,083.68/3,125.43 = 850.68/x
  3. Step 3: Cross multiply
    2,083.68x = 3,125.43 × 850.68
  4. Step 4: Simplify right side
    2,083.68x = 2,658,740.79
  5. Step 5: Solve for x
    x = 2,658,740.79/2,083.68
  6. Step 6: Final answer
    x = 1,275.98

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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.