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Finding the Fourth Proportional to 73,221.83, 109,790.70 and 28,824.36

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Solution

The fourth proportional to 73,221.83, 109,790.70 and 28,824.36 is: 43,219.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,221.83 : 109,790.70 = 28,824.36 : x
  2. Step 2: Convert to fraction form
    73,221.83/109,790.70 = 28,824.36/x
  3. Step 3: Cross multiply
    73,221.83x = 109,790.70 × 28,824.36
  4. Step 4: Simplify right side
    73,221.83x = 3,164,646,141.65
  5. Step 5: Solve for x
    x = 3,164,646,141.65/73,221.83
  6. Step 6: Final answer
    x = 43,219.98

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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.