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Finding the Fourth Proportional to 64,995.89, 89,684.21 and 36,700.97

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Solution

The fourth proportional to 64,995.89, 89,684.21 and 36,700.97 is: 50,641.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,995.89 : 89,684.21 = 36,700.97 : x
  2. Step 2: Convert to fraction form
    64,995.89/89,684.21 = 36,700.97/x
  3. Step 3: Cross multiply
    64,995.89x = 89,684.21 × 36,700.97
  4. Step 4: Simplify right side
    64,995.89x = 3,291,497,144.02
  5. Step 5: Solve for x
    x = 3,291,497,144.02/64,995.89
  6. Step 6: Final answer
    x = 50,641.62

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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.