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Finding the Fourth Proportional to 43,813.70, 65,720.55 and 32,149.70

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Solution

The fourth proportional to 43,813.70, 65,720.55 and 32,149.70 is: 48,224.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,813.70 : 65,720.55 = 32,149.70 : x
  2. Step 2: Convert to fraction form
    43,813.70/65,720.55 = 32,149.70/x
  3. Step 3: Cross multiply
    43,813.70x = 65,720.55 × 32,149.70
  4. Step 4: Simplify right side
    43,813.70x = 2,112,895,966.34
  5. Step 5: Solve for x
    x = 2,112,895,966.34/43,813.70
  6. Step 6: Final answer
    x = 48,224.55

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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.