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Finding the Fourth Proportional to 69,658.45, 96,143.97 and 45,787.35

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Solution

The fourth proportional to 69,658.45, 96,143.97 and 45,787.35 is: 63,196.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,658.45 : 96,143.97 = 45,787.35 : x
  2. Step 2: Convert to fraction form
    69,658.45/96,143.97 = 45,787.35/x
  3. Step 3: Cross multiply
    69,658.45x = 96,143.97 × 45,787.35
  4. Step 4: Simplify right side
    69,658.45x = 4,402,177,604.78
  5. Step 5: Solve for x
    x = 4,402,177,604.78/69,658.45
  6. Step 6: Final answer
    x = 63,196.61

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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.