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Finding the Fourth Proportional to 1,578.16, 2,365.50 and 796.60

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Solution

The fourth proportional to 1,578.16, 2,365.50 and 796.60 is: 1,194.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.16 : 2,365.50 = 796.60 : x
  2. Step 2: Convert to fraction form
    1,578.16/2,365.50 = 796.60/x
  3. Step 3: Cross multiply
    1,578.16x = 2,365.50 × 796.60
  4. Step 4: Simplify right side
    1,578.16x = 1,884,357.30
  5. Step 5: Solve for x
    x = 1,884,357.30/1,578.16
  6. Step 6: Final answer
    x = 1,194.02

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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.