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Finding the Fourth Proportional to 1,716.12, 2,572.43 and 792.36

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Solution

The fourth proportional to 1,716.12, 2,572.43 and 792.36 is: 1,187.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,716.12 : 2,572.43 = 792.36 : x
  2. Step 2: Convert to fraction form
    1,716.12/2,572.43 = 792.36/x
  3. Step 3: Cross multiply
    1,716.12x = 2,572.43 × 792.36
  4. Step 4: Simplify right side
    1,716.12x = 2,038,286.67
  5. Step 5: Solve for x
    x = 2,038,286.67/1,716.12
  6. Step 6: Final answer
    x = 1,187.73

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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.