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Finding the Fourth Proportional to 40,889.80, 61,334.70 and 14,624.20

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Solution

The fourth proportional to 40,889.80, 61,334.70 and 14,624.20 is: 21,936.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,889.80 : 61,334.70 = 14,624.20 : x
  2. Step 2: Convert to fraction form
    40,889.80/61,334.70 = 14,624.20/x
  3. Step 3: Cross multiply
    40,889.80x = 61,334.70 × 14,624.20
  4. Step 4: Simplify right side
    40,889.80x = 896,970,919.74
  5. Step 5: Solve for x
    x = 896,970,919.74/40,889.80
  6. Step 6: Final answer
    x = 21,936.30

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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.