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Finding the Fourth Proportional to 1,474.70, 2,035.73 and 976.46

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Solution

The fourth proportional to 1,474.70, 2,035.73 and 976.46 is: 1,347.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.70 : 2,035.73 = 976.46 : x
  2. Step 2: Convert to fraction form
    1,474.70/2,035.73 = 976.46/x
  3. Step 3: Cross multiply
    1,474.70x = 2,035.73 × 976.46
  4. Step 4: Simplify right side
    1,474.70x = 1,987,804.03
  5. Step 5: Solve for x
    x = 1,987,804.03/1,474.70
  6. Step 6: Final answer
    x = 1,347.94

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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.