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Finding the Fourth Proportional to 1,163.64, 1,605.42 and 1,032.60

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Solution

The fourth proportional to 1,163.64, 1,605.42 and 1,032.60 is: 1,424.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,163.64 : 1,605.42 = 1,032.60 : x
  2. Step 2: Convert to fraction form
    1,163.64/1,605.42 = 1,032.60/x
  3. Step 3: Cross multiply
    1,163.64x = 1,605.42 × 1,032.60
  4. Step 4: Simplify right side
    1,163.64x = 1,657,756.69
  5. Step 5: Solve for x
    x = 1,657,756.69/1,163.64
  6. Step 6: Final answer
    x = 1,424.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.