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Finding the Fourth Proportional to 12,593.80, 18,909.90 and 9,675.40

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Solution

The fourth proportional to 12,593.80, 18,909.90 and 9,675.40 is: 14,527.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,593.80 : 18,909.90 = 9,675.40 : x
  2. Step 2: Convert to fraction form
    12,593.80/18,909.90 = 9,675.40/x
  3. Step 3: Cross multiply
    12,593.80x = 18,909.90 × 9,675.40
  4. Step 4: Simplify right side
    12,593.80x = 182,960,846.46
  5. Step 5: Solve for x
    x = 182,960,846.46/12,593.80
  6. Step 6: Final answer
    x = 14,527.85

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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.