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Finding the Fourth Proportional to 81,573.52, 122,360.28 and 22,415.44

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Solution

The fourth proportional to 81,573.52, 122,360.28 and 22,415.44 is: 33,623.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,573.52 : 122,360.28 = 22,415.44 : x
  2. Step 2: Convert to fraction form
    81,573.52/122,360.28 = 22,415.44/x
  3. Step 3: Cross multiply
    81,573.52x = 122,360.28 × 22,415.44
  4. Step 4: Simplify right side
    81,573.52x = 2,742,759,514.72
  5. Step 5: Solve for x
    x = 2,742,759,514.72/81,573.52
  6. Step 6: Final answer
    x = 33,623.16

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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.