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Finding the Fourth Proportional to 73,531.20, 110,300.40 and 38,539.20

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Solution

The fourth proportional to 73,531.20, 110,300.40 and 38,539.20 is: 57,810.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,531.20 : 110,300.40 = 38,539.20 : x
  2. Step 2: Convert to fraction form
    73,531.20/110,300.40 = 38,539.20/x
  3. Step 3: Cross multiply
    73,531.20x = 110,300.40 × 38,539.20
  4. Step 4: Simplify right side
    73,531.20x = 4,250,889,175.68
  5. Step 5: Solve for x
    x = 4,250,889,175.68/73,531.20
  6. Step 6: Final answer
    x = 57,810.69

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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.