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Finding the Fourth Proportional to 2,076.51, 3,114.73 and 981.66

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Solution

The fourth proportional to 2,076.51, 3,114.73 and 981.66 is: 1,472.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,076.51 : 3,114.73 = 981.66 : x
  2. Step 2: Convert to fraction form
    2,076.51/3,114.73 = 981.66/x
  3. Step 3: Cross multiply
    2,076.51x = 3,114.73 × 981.66
  4. Step 4: Simplify right side
    2,076.51x = 3,057,605.85
  5. Step 5: Solve for x
    x = 3,057,605.85/2,076.51
  6. Step 6: Final answer
    x = 1,472.47

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.