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Finding the Fourth Proportional to 29,334.70, 40,481.65 and 15,905.91

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Solution

The fourth proportional to 29,334.70, 40,481.65 and 15,905.91 is: 21,950.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,334.70 : 40,481.65 = 15,905.91 : x
  2. Step 2: Convert to fraction form
    29,334.70/40,481.65 = 15,905.91/x
  3. Step 3: Cross multiply
    29,334.70x = 40,481.65 × 15,905.91
  4. Step 4: Simplify right side
    29,334.70x = 643,897,441.79
  5. Step 5: Solve for x
    x = 643,897,441.79/29,334.70
  6. Step 6: Final answer
    x = 21,950.03

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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.