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Finding the Fourth Proportional to 3,575.35, 5,363.54 and 1,355

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Solution

The fourth proportional to 3,575.35, 5,363.54 and 1,355 is: 2,032.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,575.35 : 5,363.54 = 1,355 : x
  2. Step 2: Convert to fraction form
    3,575.35/5,363.54 = 1,355/x
  3. Step 3: Cross multiply
    3,575.35x = 5,363.54 × 1,355
  4. Step 4: Simplify right side
    3,575.35x = 7,267,596.70
  5. Step 5: Solve for x
    x = 7,267,596.70/3,575.35
  6. Step 6: Final answer
    x = 2,032.70

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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.