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Finding the Fourth Proportional to 124,520.52, 186,907.92 and 91,141.44

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Solution

The fourth proportional to 124,520.52, 186,907.92 and 91,141.44 is: 136,805.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,520.52 : 186,907.92 = 91,141.44 : x
  2. Step 2: Convert to fraction form
    124,520.52/186,907.92 = 91,141.44/x
  3. Step 3: Cross multiply
    124,520.52x = 186,907.92 × 91,141.44
  4. Step 4: Simplify right side
    124,520.52x = 17,035,056,976.20
  5. Step 5: Solve for x
    x = 17,035,056,976.20/124,520.52
  6. Step 6: Final answer
    x = 136,805.22

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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.