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Finding the Fourth Proportional to 70,890.79, 106,336.19 and 58,360.56

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Solution

The fourth proportional to 70,890.79, 106,336.19 and 58,360.56 is: 87,540.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,890.79 : 106,336.19 = 58,360.56 : x
  2. Step 2: Convert to fraction form
    70,890.79/106,336.19 = 58,360.56/x
  3. Step 3: Cross multiply
    70,890.79x = 106,336.19 × 58,360.56
  4. Step 4: Simplify right side
    70,890.79x = 6,205,839,304.86
  5. Step 5: Solve for x
    x = 6,205,839,304.86/70,890.79
  6. Step 6: Final answer
    x = 87,540.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.