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Finding the Fourth Proportional to 1,732.53, 2,390.90 and 1,069.23

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Solution

The fourth proportional to 1,732.53, 2,390.90 and 1,069.23 is: 1,475.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,732.53 : 2,390.90 = 1,069.23 : x
  2. Step 2: Convert to fraction form
    1,732.53/2,390.90 = 1,069.23/x
  3. Step 3: Cross multiply
    1,732.53x = 2,390.90 × 1,069.23
  4. Step 4: Simplify right side
    1,732.53x = 2,556,416.66
  5. Step 5: Solve for x
    x = 2,556,416.66/1,732.53
  6. Step 6: Final answer
    x = 1,475.54

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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.