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Finding the Fourth Proportional to 74,792.92, 112,188.51 and 21,486.21

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Solution

The fourth proportional to 74,792.92, 112,188.51 and 21,486.21 is: 32,229.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,792.92 : 112,188.51 = 21,486.21 : x
  2. Step 2: Convert to fraction form
    74,792.92/112,188.51 = 21,486.21/x
  3. Step 3: Cross multiply
    74,792.92x = 112,188.51 × 21,486.21
  4. Step 4: Simplify right side
    74,792.92x = 2,410,505,939.16
  5. Step 5: Solve for x
    x = 2,410,505,939.16/74,792.92
  6. Step 6: Final answer
    x = 32,229.07

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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.