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Finding the Fourth Proportional to 995.72, 1,492.70 and 508.52

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Solution

The fourth proportional to 995.72, 1,492.70 and 508.52 is: 762.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.72 : 1,492.70 = 508.52 : x
  2. Step 2: Convert to fraction form
    995.72/1,492.70 = 508.52/x
  3. Step 3: Cross multiply
    995.72x = 1,492.70 × 508.52
  4. Step 4: Simplify right side
    995.72x = 759,067.80
  5. Step 5: Solve for x
    x = 759,067.80/995.72
  6. Step 6: Final answer
    x = 762.33

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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.