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Finding the Fourth Proportional to 792.88, 1,193.62 and 713.50

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Solution

The fourth proportional to 792.88, 1,193.62 and 713.50 is: 1,074.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.88 : 1,193.62 = 713.50 : x
  2. Step 2: Convert to fraction form
    792.88/1,193.62 = 713.50/x
  3. Step 3: Cross multiply
    792.88x = 1,193.62 × 713.50
  4. Step 4: Simplify right side
    792.88x = 851,647.87
  5. Step 5: Solve for x
    x = 851,647.87/792.88
  6. Step 6: Final answer
    x = 1,074.12

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.