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Finding the Fourth Proportional to 60,536.88, 90,805.39 and 28,939.50

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Solution

The fourth proportional to 60,536.88, 90,805.39 and 28,939.50 is: 43,409.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,536.88 : 90,805.39 = 28,939.50 : x
  2. Step 2: Convert to fraction form
    60,536.88/90,805.39 = 28,939.50/x
  3. Step 3: Cross multiply
    60,536.88x = 90,805.39 × 28,939.50
  4. Step 4: Simplify right side
    60,536.88x = 2,627,862,511.56
  5. Step 5: Solve for x
    x = 2,627,862,511.56/60,536.88
  6. Step 6: Final answer
    x = 43,409.28

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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.