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Finding the Fourth Proportional to 1,062.25, 1,465.27 and 668.59

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Solution

The fourth proportional to 1,062.25, 1,465.27 and 668.59 is: 922.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,062.25 : 1,465.27 = 668.59 : x
  2. Step 2: Convert to fraction form
    1,062.25/1,465.27 = 668.59/x
  3. Step 3: Cross multiply
    1,062.25x = 1,465.27 × 668.59
  4. Step 4: Simplify right side
    1,062.25x = 979,664.87
  5. Step 5: Solve for x
    x = 979,664.87/1,062.25
  6. Step 6: Final answer
    x = 922.25

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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.