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Finding the Fourth Proportional to 15,832.75, 21,848.53 and 8,662.63

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Solution

The fourth proportional to 15,832.75, 21,848.53 and 8,662.63 is: 11,954.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,832.75 : 21,848.53 = 8,662.63 : x
  2. Step 2: Convert to fraction form
    15,832.75/21,848.53 = 8,662.63/x
  3. Step 3: Cross multiply
    15,832.75x = 21,848.53 × 8,662.63
  4. Step 4: Simplify right side
    15,832.75x = 189,265,578.88
  5. Step 5: Solve for x
    x = 189,265,578.88/15,832.75
  6. Step 6: Final answer
    x = 11,954.06

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1.5x scale

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.