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Finding the Fourth Proportional to 1,653.57, 2,480.40 and 922.59

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Solution

The fourth proportional to 1,653.57, 2,480.40 and 922.59 is: 1,383.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,653.57 : 2,480.40 = 922.59 : x
  2. Step 2: Convert to fraction form
    1,653.57/2,480.40 = 922.59/x
  3. Step 3: Cross multiply
    1,653.57x = 2,480.40 × 922.59
  4. Step 4: Simplify right side
    1,653.57x = 2,288,392.24
  5. Step 5: Solve for x
    x = 2,288,392.24/1,653.57
  6. Step 6: Final answer
    x = 1,383.91

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Why These Related Problems?

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