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Finding the Fourth Proportional to 792.16, 1,186.96 and 483.08

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Solution

The fourth proportional to 792.16, 1,186.96 and 483.08 is: 723.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.16 : 1,186.96 = 483.08 : x
  2. Step 2: Convert to fraction form
    792.16/1,186.96 = 483.08/x
  3. Step 3: Cross multiply
    792.16x = 1,186.96 × 483.08
  4. Step 4: Simplify right side
    792.16x = 573,388.29
  5. Step 5: Solve for x
    x = 573,388.29/792.16
  6. Step 6: Final answer
    x = 723.83

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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.