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Finding the Fourth Proportional to 53,959.95, 80,939.93 and 29,011.75

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Solution

The fourth proportional to 53,959.95, 80,939.93 and 29,011.75 is: 43,517.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,959.95 : 80,939.93 = 29,011.75 : x
  2. Step 2: Convert to fraction form
    53,959.95/80,939.93 = 29,011.75/x
  3. Step 3: Cross multiply
    53,959.95x = 80,939.93 × 29,011.75
  4. Step 4: Simplify right side
    53,959.95x = 2,348,209,104.31
  5. Step 5: Solve for x
    x = 2,348,209,104.31/53,959.95
  6. Step 6: Final answer
    x = 43,517.63

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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.