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Finding the Fourth Proportional to 43,856.82, 65,792.13 and 18,903.96

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Solution

The fourth proportional to 43,856.82, 65,792.13 and 18,903.96 is: 28,358.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,856.82 : 65,792.13 = 18,903.96 : x
  2. Step 2: Convert to fraction form
    43,856.82/65,792.13 = 18,903.96/x
  3. Step 3: Cross multiply
    43,856.82x = 65,792.13 × 18,903.96
  4. Step 4: Simplify right side
    43,856.82x = 1,243,731,793.83
  5. Step 5: Solve for x
    x = 1,243,731,793.83/43,856.82
  6. Step 6: Final answer
    x = 28,358.91

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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.