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Finding the Fourth Proportional to 995.65, 1,493.97 and 753.66

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Solution

The fourth proportional to 995.65, 1,493.97 and 753.66 is: 1,130.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.65 : 1,493.97 = 753.66 : x
  2. Step 2: Convert to fraction form
    995.65/1,493.97 = 753.66/x
  3. Step 3: Cross multiply
    995.65x = 1,493.97 × 753.66
  4. Step 4: Simplify right side
    995.65x = 1,125,945.43
  5. Step 5: Solve for x
    x = 1,125,945.43/995.65
  6. Step 6: Final answer
    x = 1,130.86

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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.