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Finding the Fourth Proportional to 69,661.84, 96,173.19 and 45,857.71

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Solution

The fourth proportional to 69,661.84, 96,173.19 and 45,857.71 is: 63,309.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,661.84 : 96,173.19 = 45,857.71 : x
  2. Step 2: Convert to fraction form
    69,661.84/96,173.19 = 45,857.71/x
  3. Step 3: Cross multiply
    69,661.84x = 96,173.19 × 45,857.71
  4. Step 4: Simplify right side
    69,661.84x = 4,410,282,068.01
  5. Step 5: Solve for x
    x = 4,410,282,068.01/69,661.84
  6. Step 6: Final answer
    x = 63,309.87

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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.