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Finding the Fourth Proportional to 135,297.15, 202,947.12 and 60,421.11

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Solution

The fourth proportional to 135,297.15, 202,947.12 and 60,421.11 is: 90,632.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,297.15 : 202,947.12 = 60,421.11 : x
  2. Step 2: Convert to fraction form
    135,297.15/202,947.12 = 60,421.11/x
  3. Step 3: Cross multiply
    135,297.15x = 202,947.12 × 60,421.11
  4. Step 4: Simplify right side
    135,297.15x = 12,262,290,261.70
  5. Step 5: Solve for x
    x = 12,262,290,261.70/135,297.15
  6. Step 6: Final answer
    x = 90,632.29

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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.