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Finding the Fourth Proportional to 1,049.25, 1,574.60 and 365.25

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Solution

The fourth proportional to 1,049.25, 1,574.60 and 365.25 is: 548.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.25 : 1,574.60 = 365.25 : x
  2. Step 2: Convert to fraction form
    1,049.25/1,574.60 = 365.25/x
  3. Step 3: Cross multiply
    1,049.25x = 1,574.60 × 365.25
  4. Step 4: Simplify right side
    1,049.25x = 575,122.65
  5. Step 5: Solve for x
    x = 575,122.65/1,049.25
  6. Step 6: Final answer
    x = 548.13

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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.