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Finding the Fourth Proportional to 72,874.49, 109,064.83 and 44,812.32

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Solution

The fourth proportional to 72,874.49, 109,064.83 and 44,812.32 is: 67,066.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,874.49 : 109,064.83 = 44,812.32 : x
  2. Step 2: Convert to fraction form
    72,874.49/109,064.83 = 44,812.32/x
  3. Step 3: Cross multiply
    72,874.49x = 109,064.83 × 44,812.32
  4. Step 4: Simplify right side
    72,874.49x = 4,887,447,625.70
  5. Step 5: Solve for x
    x = 4,887,447,625.70/72,874.49
  6. Step 6: Final answer
    x = 67,066.65

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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.