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Finding the Fourth Proportional to 110,898.70, 166,348.05 and 91,215.70

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Solution

The fourth proportional to 110,898.70, 166,348.05 and 91,215.70 is: 136,823.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,898.70 : 166,348.05 = 91,215.70 : x
  2. Step 2: Convert to fraction form
    110,898.70/166,348.05 = 91,215.70/x
  3. Step 3: Cross multiply
    110,898.70x = 166,348.05 × 91,215.70
  4. Step 4: Simplify right side
    110,898.70x = 15,173,553,824.39
  5. Step 5: Solve for x
    x = 15,173,553,824.39/110,898.70
  6. Step 6: Final answer
    x = 136,823.55

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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.