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Finding the Fourth Proportional to 45,909.40, 68,873.70 and 14,747.80

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Solution

The fourth proportional to 45,909.40, 68,873.70 and 14,747.80 is: 22,124.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,909.40 : 68,873.70 = 14,747.80 : x
  2. Step 2: Convert to fraction form
    45,909.40/68,873.70 = 14,747.80/x
  3. Step 3: Cross multiply
    45,909.40x = 68,873.70 × 14,747.80
  4. Step 4: Simplify right side
    45,909.40x = 1,015,735,552.86
  5. Step 5: Solve for x
    x = 1,015,735,552.86/45,909.40
  6. Step 6: Final answer
    x = 22,124.78

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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.