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Finding the Fourth Proportional to 64,709.97, 89,316.39 and 50,366.49

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Solution

The fourth proportional to 64,709.97, 89,316.39 and 50,366.49 is: 69,518.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,709.97 : 89,316.39 = 50,366.49 : x
  2. Step 2: Convert to fraction form
    64,709.97/89,316.39 = 50,366.49/x
  3. Step 3: Cross multiply
    64,709.97x = 89,316.39 × 50,366.49
  4. Step 4: Simplify right side
    64,709.97x = 4,498,553,063.77
  5. Step 5: Solve for x
    x = 4,498,553,063.77/64,709.97
  6. Step 6: Final answer
    x = 69,518.70

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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.