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Finding the Fourth Proportional to 995.52, 1,492.16 and 482.88

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Solution

The fourth proportional to 995.52, 1,492.16 and 482.88 is: 723.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.52 : 1,492.16 = 482.88 : x
  2. Step 2: Convert to fraction form
    995.52/1,492.16 = 482.88/x
  3. Step 3: Cross multiply
    995.52x = 1,492.16 × 482.88
  4. Step 4: Simplify right side
    995.52x = 720,534.22
  5. Step 5: Solve for x
    x = 720,534.22/995.52
  6. Step 6: Final answer
    x = 723.78

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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.