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Finding the Fourth Proportional to 69,966.84, 104,540.79 and 67,516.92

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Solution

The fourth proportional to 69,966.84, 104,540.79 and 67,516.92 is: 100,880.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,966.84 : 104,540.79 = 67,516.92 : x
  2. Step 2: Convert to fraction form
    69,966.84/104,540.79 = 67,516.92/x
  3. Step 3: Cross multiply
    69,966.84x = 104,540.79 × 67,516.92
  4. Step 4: Simplify right side
    69,966.84x = 7,058,272,155.17
  5. Step 5: Solve for x
    x = 7,058,272,155.17/69,966.84
  6. Step 6: Final answer
    x = 100,880.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.