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Finding the Fourth Proportional to 64,679.63, 89,257.86 and 36,385.32

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Solution

The fourth proportional to 64,679.63, 89,257.86 and 36,385.32 is: 50,211.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,679.63 : 89,257.86 = 36,385.32 : x
  2. Step 2: Convert to fraction form
    64,679.63/89,257.86 = 36,385.32/x
  3. Step 3: Cross multiply
    64,679.63x = 89,257.86 × 36,385.32
  4. Step 4: Simplify right side
    64,679.63x = 3,247,675,798.62
  5. Step 5: Solve for x
    x = 3,247,675,798.62/64,679.63
  6. Step 6: Final answer
    x = 50,211.73

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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.