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Finding the Fourth Proportional to 73,400.80, 110,216.40 and 42,296.80

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Solution

The fourth proportional to 73,400.80, 110,216.40 and 42,296.80 is: 63,511.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,400.80 : 110,216.40 = 42,296.80 : x
  2. Step 2: Convert to fraction form
    73,400.80/110,216.40 = 42,296.80/x
  3. Step 3: Cross multiply
    73,400.80x = 110,216.40 × 42,296.80
  4. Step 4: Simplify right side
    73,400.80x = 4,661,801,027.52
  5. Step 5: Solve for x
    x = 4,661,801,027.52/73,400.80
  6. Step 6: Final answer
    x = 63,511.58

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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.