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Finding the Fourth Proportional to 995.28, 1,492.36 and 585.44

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Solution

The fourth proportional to 995.28, 1,492.36 and 585.44 is: 877.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.28 : 1,492.36 = 585.44 : x
  2. Step 2: Convert to fraction form
    995.28/1,492.36 = 585.44/x
  3. Step 3: Cross multiply
    995.28x = 1,492.36 × 585.44
  4. Step 4: Simplify right side
    995.28x = 873,687.24
  5. Step 5: Solve for x
    x = 873,687.24/995.28
  6. Step 6: Final answer
    x = 877.83

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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.