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Finding the Fourth Proportional to 73,900.60, 110,867.28 and 21,305.98

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Solution

The fourth proportional to 73,900.60, 110,867.28 and 21,305.98 is: 31,963.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,900.60 : 110,867.28 = 21,305.98 : x
  2. Step 2: Convert to fraction form
    73,900.60/110,867.28 = 21,305.98/x
  3. Step 3: Cross multiply
    73,900.60x = 110,867.28 × 21,305.98
  4. Step 4: Simplify right side
    73,900.60x = 2,362,136,050.33
  5. Step 5: Solve for x
    x = 2,362,136,050.33/73,900.60
  6. Step 6: Final answer
    x = 31,963.69

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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.