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Finding the Fourth Proportional to 2,355.13, 3,533.16 and 711.82

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Solution

The fourth proportional to 2,355.13, 3,533.16 and 711.82 is: 1,067.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,355.13 : 3,533.16 = 711.82 : x
  2. Step 2: Convert to fraction form
    2,355.13/3,533.16 = 711.82/x
  3. Step 3: Cross multiply
    2,355.13x = 3,533.16 × 711.82
  4. Step 4: Simplify right side
    2,355.13x = 2,514,973.95
  5. Step 5: Solve for x
    x = 2,514,973.95/2,355.13
  6. Step 6: Final answer
    x = 1,067.87

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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.