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Finding the Fourth Proportional to 2,090.17, 3,133.39 and 792.55

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Solution

The fourth proportional to 2,090.17, 3,133.39 and 792.55 is: 1,188.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.17 : 3,133.39 = 792.55 : x
  2. Step 2: Convert to fraction form
    2,090.17/3,133.39 = 792.55/x
  3. Step 3: Cross multiply
    2,090.17x = 3,133.39 × 792.55
  4. Step 4: Simplify right side
    2,090.17x = 2,483,368.24
  5. Step 5: Solve for x
    x = 2,483,368.24/2,090.17
  6. Step 6: Final answer
    x = 1,188.12

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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.