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Finding the Fourth Proportional to 72,872.47, 109,061.81 and 44,810.30

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Solution

The fourth proportional to 72,872.47, 109,061.81 and 44,810.30 is: 67,063.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,872.47 : 109,061.81 = 44,810.30 : x
  2. Step 2: Convert to fraction form
    72,872.47/109,061.81 = 44,810.30/x
  3. Step 3: Cross multiply
    72,872.47x = 109,061.81 × 44,810.30
  4. Step 4: Simplify right side
    72,872.47x = 4,887,092,015.66
  5. Step 5: Solve for x
    x = 4,887,092,015.66/72,872.47
  6. Step 6: Final answer
    x = 67,063.63

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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.