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Finding the Fourth Proportional to 64,921.69, 89,596.44 and 36,247

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Solution

The fourth proportional to 64,921.69, 89,596.44 and 36,247 is: 50,023.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,921.69 : 89,596.44 = 36,247 : x
  2. Step 2: Convert to fraction form
    64,921.69/89,596.44 = 36,247/x
  3. Step 3: Cross multiply
    64,921.69x = 89,596.44 × 36,247
  4. Step 4: Simplify right side
    64,921.69x = 3,247,602,160.68
  5. Step 5: Solve for x
    x = 3,247,602,160.68/64,921.69
  6. Step 6: Final answer
    x = 50,023.38

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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.