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Finding the Fourth Proportional to 81,798.74, 122,700.84 and 22,629.45

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Solution

The fourth proportional to 81,798.74, 122,700.84 and 22,629.45 is: 33,944.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,798.74 : 122,700.84 = 22,629.45 : x
  2. Step 2: Convert to fraction form
    81,798.74/122,700.84 = 22,629.45/x
  3. Step 3: Cross multiply
    81,798.74x = 122,700.84 × 22,629.45
  4. Step 4: Simplify right side
    81,798.74x = 2,776,652,410.59
  5. Step 5: Solve for x
    x = 2,776,652,410.59/81,798.74
  6. Step 6: Final answer
    x = 33,944.93

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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.