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Finding the Fourth Proportional to 43,720.70, 65,581.05 and 34,972.70

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Solution

The fourth proportional to 43,720.70, 65,581.05 and 34,972.70 is: 52,459.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,720.70 : 65,581.05 = 34,972.70 : x
  2. Step 2: Convert to fraction form
    43,720.70/65,581.05 = 34,972.70/x
  3. Step 3: Cross multiply
    43,720.70x = 65,581.05 × 34,972.70
  4. Step 4: Simplify right side
    43,720.70x = 2,293,546,387.34
  5. Step 5: Solve for x
    x = 2,293,546,387.34/43,720.70
  6. Step 6: Final answer
    x = 52,459.05

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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.