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Finding the Fourth Proportional to 20,625.96, 30,933.97 and 9,521.98

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Solution

The fourth proportional to 20,625.96, 30,933.97 and 9,521.98 is: 14,280.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,625.96 : 30,933.97 = 9,521.98 : x
  2. Step 2: Convert to fraction form
    20,625.96/30,933.97 = 9,521.98/x
  3. Step 3: Cross multiply
    20,625.96x = 30,933.97 × 9,521.98
  4. Step 4: Simplify right side
    20,625.96x = 294,552,643.66
  5. Step 5: Solve for x
    x = 294,552,643.66/20,625.96
  6. Step 6: Final answer
    x = 14,280.68

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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.