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Finding the Fourth Proportional to 59,741.88, 89,589.78 and 20,289.72

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Solution

The fourth proportional to 59,741.88, 89,589.78 and 20,289.72 is: 30,426.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,741.88 : 89,589.78 = 20,289.72 : x
  2. Step 2: Convert to fraction form
    59,741.88/89,589.78 = 20,289.72/x
  3. Step 3: Cross multiply
    59,741.88x = 89,589.78 × 20,289.72
  4. Step 4: Simplify right side
    59,741.88x = 1,817,751,551.06
  5. Step 5: Solve for x
    x = 1,817,751,551.06/59,741.88
  6. Step 6: Final answer
    x = 30,426.76

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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.