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Finding the Fourth Proportional to 64,649.94, 89,217.46 and 36,355.38

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Solution

The fourth proportional to 64,649.94, 89,217.46 and 36,355.38 is: 50,170.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,649.94 : 89,217.46 = 36,355.38 : x
  2. Step 2: Convert to fraction form
    64,649.94/89,217.46 = 36,355.38/x
  3. Step 3: Cross multiply
    64,649.94x = 89,217.46 × 36,355.38
  4. Step 4: Simplify right side
    64,649.94x = 3,243,534,660.93
  5. Step 5: Solve for x
    x = 3,243,534,660.93/64,649.94
  6. Step 6: Final answer
    x = 50,170.73

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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.