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Finding the Fourth Proportional to 12,523.73, 17,277.21 and 7,485.42

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Solution

The fourth proportional to 12,523.73, 17,277.21 and 7,485.42 is: 10,326.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,523.73 : 17,277.21 = 7,485.42 : x
  2. Step 2: Convert to fraction form
    12,523.73/17,277.21 = 7,485.42/x
  3. Step 3: Cross multiply
    12,523.73x = 17,277.21 × 7,485.42
  4. Step 4: Simplify right side
    12,523.73x = 129,327,173.28
  5. Step 5: Solve for x
    x = 129,327,173.28/12,523.73
  6. Step 6: Final answer
    x = 10,326.57

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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.