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Finding the Fourth Proportional to 1,447.99, 2,171.23 and 625.16

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Solution

The fourth proportional to 1,447.99, 2,171.23 and 625.16 is: 937.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.99 : 2,171.23 = 625.16 : x
  2. Step 2: Convert to fraction form
    1,447.99/2,171.23 = 625.16/x
  3. Step 3: Cross multiply
    1,447.99x = 2,171.23 × 625.16
  4. Step 4: Simplify right side
    1,447.99x = 1,357,366.15
  5. Step 5: Solve for x
    x = 1,357,366.15/1,447.99
  6. Step 6: Final answer
    x = 937.41

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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.