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Finding the Fourth Proportional to 64,958.88, 89,641.44 and 36,667.20

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Solution

The fourth proportional to 64,958.88, 89,641.44 and 36,667.20 is: 50,599.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,958.88 : 89,641.44 = 36,667.20 : x
  2. Step 2: Convert to fraction form
    64,958.88/89,641.44 = 36,667.20/x
  3. Step 3: Cross multiply
    64,958.88x = 89,641.44 × 36,667.20
  4. Step 4: Simplify right side
    64,958.88x = 3,286,900,608.77
  5. Step 5: Solve for x
    x = 3,286,900,608.77/64,958.88
  6. Step 6: Final answer
    x = 50,599.71

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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.