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Finding the Fourth Proportional to 2,086.01, 3,129.51 and 625.13

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Solution

The fourth proportional to 2,086.01, 3,129.51 and 625.13 is: 937.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,086.01 : 3,129.51 = 625.13 : x
  2. Step 2: Convert to fraction form
    2,086.01/3,129.51 = 625.13/x
  3. Step 3: Cross multiply
    2,086.01x = 3,129.51 × 625.13
  4. Step 4: Simplify right side
    2,086.01x = 1,956,350.59
  5. Step 5: Solve for x
    x = 1,956,350.59/2,086.01
  6. Step 6: Final answer
    x = 937.84

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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.