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Finding the Fourth Proportional to 135,309.22, 202,742.19 and 72,062.19

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Solution

The fourth proportional to 135,309.22, 202,742.19 and 72,062.19 is: 107,975.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,309.22 : 202,742.19 = 72,062.19 : x
  2. Step 2: Convert to fraction form
    135,309.22/202,742.19 = 72,062.19/x
  3. Step 3: Cross multiply
    135,309.22x = 202,742.19 × 72,062.19
  4. Step 4: Simplify right side
    135,309.22x = 14,610,046,216.80
  5. Step 5: Solve for x
    x = 14,610,046,216.80/135,309.22
  6. Step 6: Final answer
    x = 107,975.25

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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.