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Finding the Fourth Proportional to 1,766.53, 2,437.81 and 969.86

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Solution

The fourth proportional to 1,766.53, 2,437.81 and 969.86 is: 1,338.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,766.53 : 2,437.81 = 969.86 : x
  2. Step 2: Convert to fraction form
    1,766.53/2,437.81 = 969.86/x
  3. Step 3: Cross multiply
    1,766.53x = 2,437.81 × 969.86
  4. Step 4: Simplify right side
    1,766.53x = 2,364,334.41
  5. Step 5: Solve for x
    x = 2,364,334.41/1,766.53
  6. Step 6: Final answer
    x = 1,338.41

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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.