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Finding the Fourth Proportional to 58,659.89, 87,989.99 and 14,286.56

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Solution

The fourth proportional to 58,659.89, 87,989.99 and 14,286.56 is: 21,429.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,659.89 : 87,989.99 = 14,286.56 : x
  2. Step 2: Convert to fraction form
    58,659.89/87,989.99 = 14,286.56/x
  3. Step 3: Cross multiply
    58,659.89x = 87,989.99 × 14,286.56
  4. Step 4: Simplify right side
    58,659.89x = 1,257,073,760.15
  5. Step 5: Solve for x
    x = 1,257,073,760.15/58,659.89
  6. Step 6: Final answer
    x = 21,429.87

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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.