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Finding the Fourth Proportional to 2,689.77, 3,712.02 and 1,494.89

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Solution

The fourth proportional to 2,689.77, 3,712.02 and 1,494.89 is: 2,063.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.77 : 3,712.02 = 1,494.89 : x
  2. Step 2: Convert to fraction form
    2,689.77/3,712.02 = 1,494.89/x
  3. Step 3: Cross multiply
    2,689.77x = 3,712.02 × 1,494.89
  4. Step 4: Simplify right side
    2,689.77x = 5,549,043.02
  5. Step 5: Solve for x
    x = 5,549,043.02/2,689.77
  6. Step 6: Final answer
    x = 2,063.02

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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.