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Finding the Fourth Proportional to 81,293.41, 121,927.80 and 22,133.74

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Solution

The fourth proportional to 81,293.41, 121,927.80 and 22,133.74 is: 33,197.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,293.41 : 121,927.80 = 22,133.74 : x
  2. Step 2: Convert to fraction form
    81,293.41/121,927.80 = 22,133.74/x
  3. Step 3: Cross multiply
    81,293.41x = 121,927.80 × 22,133.74
  4. Step 4: Simplify right side
    81,293.41x = 2,698,717,919.15
  5. Step 5: Solve for x
    x = 2,698,717,919.15/81,293.41
  6. Step 6: Final answer
    x = 33,197.25

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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.