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Finding the Fourth Proportional to 14,958.30, 20,643.62 and 8,245.14

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Solution

The fourth proportional to 14,958.30, 20,643.62 and 8,245.14 is: 11,378.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,958.30 : 20,643.62 = 8,245.14 : x
  2. Step 2: Convert to fraction form
    14,958.30/20,643.62 = 8,245.14/x
  3. Step 3: Cross multiply
    14,958.30x = 20,643.62 × 8,245.14
  4. Step 4: Simplify right side
    14,958.30x = 170,209,537.01
  5. Step 5: Solve for x
    x = 170,209,537.01/14,958.30
  6. Step 6: Final answer
    x = 11,378.94

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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.