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Finding the Fourth Proportional to 2,335.51, 3,502.59 and 691.75

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Solution

The fourth proportional to 2,335.51, 3,502.59 and 691.75 is: 1,037.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,335.51 : 3,502.59 = 691.75 : x
  2. Step 2: Convert to fraction form
    2,335.51/3,502.59 = 691.75/x
  3. Step 3: Cross multiply
    2,335.51x = 3,502.59 × 691.75
  4. Step 4: Simplify right side
    2,335.51x = 2,422,916.63
  5. Step 5: Solve for x
    x = 2,422,916.63/2,335.51
  6. Step 6: Final answer
    x = 1,037.43

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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.