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Finding the Fourth Proportional to 43,705.88, 65,540.73 and 13,710.11

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Solution

The fourth proportional to 43,705.88, 65,540.73 and 13,710.11 is: 20,559.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,705.88 : 65,540.73 = 13,710.11 : x
  2. Step 2: Convert to fraction form
    43,705.88/65,540.73 = 13,710.11/x
  3. Step 3: Cross multiply
    43,705.88x = 65,540.73 × 13,710.11
  4. Step 4: Simplify right side
    43,705.88x = 898,570,290.08
  5. Step 5: Solve for x
    x = 898,570,290.08/43,705.88
  6. Step 6: Final answer
    x = 20,559.49

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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.