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Finding the Fourth Proportional to 995.64, 1,493.52 and 346.42

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Solution

The fourth proportional to 995.64, 1,493.52 and 346.42 is: 519.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.64 : 1,493.52 = 346.42 : x
  2. Step 2: Convert to fraction form
    995.64/1,493.52 = 346.42/x
  3. Step 3: Cross multiply
    995.64x = 1,493.52 × 346.42
  4. Step 4: Simplify right side
    995.64x = 517,385.20
  5. Step 5: Solve for x
    x = 517,385.20/995.64
  6. Step 6: Final answer
    x = 519.65

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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.