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Finding the Fourth Proportional to 2,935.13, 4,403.36 and 987.33

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Solution

The fourth proportional to 2,935.13, 4,403.36 and 987.33 is: 1,481.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,935.13 : 4,403.36 = 987.33 : x
  2. Step 2: Convert to fraction form
    2,935.13/4,403.36 = 987.33/x
  3. Step 3: Cross multiply
    2,935.13x = 4,403.36 × 987.33
  4. Step 4: Simplify right side
    2,935.13x = 4,347,564.49
  5. Step 5: Solve for x
    x = 4,347,564.49/2,935.13
  6. Step 6: Final answer
    x = 1,481.22

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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.