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Finding the Fourth Proportional to 99,817.70, 149,726.55 and 92,600.60

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Solution

The fourth proportional to 99,817.70, 149,726.55 and 92,600.60 is: 138,900.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,817.70 : 149,726.55 = 92,600.60 : x
  2. Step 2: Convert to fraction form
    99,817.70/149,726.55 = 92,600.60/x
  3. Step 3: Cross multiply
    99,817.70x = 149,726.55 × 92,600.60
  4. Step 4: Simplify right side
    99,817.70x = 13,864,768,365.93
  5. Step 5: Solve for x
    x = 13,864,768,365.93/99,817.70
  6. Step 6: Final answer
    x = 138,900.90

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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.