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Finding the Fourth Proportional to 64,572.46, 89,109.40 and 35,891.38

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Solution

The fourth proportional to 64,572.46, 89,109.40 and 35,891.38 is: 49,529.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,572.46 : 89,109.40 = 35,891.38 : x
  2. Step 2: Convert to fraction form
    64,572.46/89,109.40 = 35,891.38/x
  3. Step 3: Cross multiply
    64,572.46x = 89,109.40 × 35,891.38
  4. Step 4: Simplify right side
    64,572.46x = 3,198,259,336.97
  5. Step 5: Solve for x
    x = 3,198,259,336.97/64,572.46
  6. Step 6: Final answer
    x = 49,529.78

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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.