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Finding the Fourth Proportional to 995.40, 1,484.69 and 927.36

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Solution

The fourth proportional to 995.40, 1,484.69 and 927.36 is: 1,383.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.40 : 1,484.69 = 927.36 : x
  2. Step 2: Convert to fraction form
    995.40/1,484.69 = 927.36/x
  3. Step 3: Cross multiply
    995.40x = 1,484.69 × 927.36
  4. Step 4: Simplify right side
    995.40x = 1,376,837.48
  5. Step 5: Solve for x
    x = 1,376,837.48/995.40
  6. Step 6: Final answer
    x = 1,383.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.