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Finding the Fourth Proportional to 17,317.90, 25,978.21 and 5,472.58

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Solution

The fourth proportional to 17,317.90, 25,978.21 and 5,472.58 is: 8,209.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,317.90 : 25,978.21 = 5,472.58 : x
  2. Step 2: Convert to fraction form
    17,317.90/25,978.21 = 5,472.58/x
  3. Step 3: Cross multiply
    17,317.90x = 25,978.21 × 5,472.58
  4. Step 4: Simplify right side
    17,317.90x = 142,167,832.48
  5. Step 5: Solve for x
    x = 142,167,832.48/17,317.90
  6. Step 6: Final answer
    x = 8,209.30

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1.5x scale

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.