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Finding the Fourth Proportional to 64,641.76, 89,213.94 and 36,352.96

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Solution

The fourth proportional to 64,641.76, 89,213.94 and 36,352.96 is: 50,171.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,641.76 : 89,213.94 = 36,352.96 : x
  2. Step 2: Convert to fraction form
    64,641.76/89,213.94 = 36,352.96/x
  3. Step 3: Cross multiply
    64,641.76x = 89,213.94 × 36,352.96
  4. Step 4: Simplify right side
    64,641.76x = 3,243,190,792.26
  5. Step 5: Solve for x
    x = 3,243,190,792.26/64,641.76
  6. Step 6: Final answer
    x = 50,171.76

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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.