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Finding the Fourth Proportional to 73,111.26, 109,712.01 and 28,730.22

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Solution

The fourth proportional to 73,111.26, 109,712.01 and 28,730.22 is: 43,113.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,111.26 : 109,712.01 = 28,730.22 : x
  2. Step 2: Convert to fraction form
    73,111.26/109,712.01 = 28,730.22/x
  3. Step 3: Cross multiply
    73,111.26x = 109,712.01 × 28,730.22
  4. Step 4: Simplify right side
    73,111.26x = 3,152,050,183.94
  5. Step 5: Solve for x
    x = 3,152,050,183.94/73,111.26
  6. Step 6: Final answer
    x = 43,113.06

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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.