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Finding the Fourth Proportional to 99,367.70, 149,051.40 and 40,203.83

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Solution

The fourth proportional to 99,367.70, 149,051.40 and 40,203.83 is: 60,305.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,367.70 : 149,051.40 = 40,203.83 : x
  2. Step 2: Convert to fraction form
    99,367.70/149,051.40 = 40,203.83/x
  3. Step 3: Cross multiply
    99,367.70x = 149,051.40 × 40,203.83
  4. Step 4: Simplify right side
    99,367.70x = 5,992,437,146.86
  5. Step 5: Solve for x
    x = 5,992,437,146.86/99,367.70
  6. Step 6: Final answer
    x = 60,305.68

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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.