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Finding the Fourth Proportional to 17,788.20, 26,683.62 and 5,307.24

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Solution

The fourth proportional to 17,788.20, 26,683.62 and 5,307.24 is: 7,961.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,788.20 : 26,683.62 = 5,307.24 : x
  2. Step 2: Convert to fraction form
    17,788.20/26,683.62 = 5,307.24/x
  3. Step 3: Cross multiply
    17,788.20x = 26,683.62 × 5,307.24
  4. Step 4: Simplify right side
    17,788.20x = 141,616,375.41
  5. Step 5: Solve for x
    x = 141,616,375.41/17,788.20
  6. Step 6: Final answer
    x = 7,961.25

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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.