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Finding the Fourth Proportional to 2,789.76, 3,849.86 and 1,547.76

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Solution

The fourth proportional to 2,789.76, 3,849.86 and 1,547.76 is: 2,135.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.76 : 3,849.86 = 1,547.76 : x
  2. Step 2: Convert to fraction form
    2,789.76/3,849.86 = 1,547.76/x
  3. Step 3: Cross multiply
    2,789.76x = 3,849.86 × 1,547.76
  4. Step 4: Simplify right side
    2,789.76x = 5,958,659.31
  5. Step 5: Solve for x
    x = 5,958,659.31/2,789.76
  6. Step 6: Final answer
    x = 2,135.90

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.