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Finding the Fourth Proportional to 135,195.40, 202,908.30 and 60,430.60

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Solution

The fourth proportional to 135,195.40, 202,908.30 and 60,430.60 is: 90,697.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,195.40 : 202,908.30 = 60,430.60 : x
  2. Step 2: Convert to fraction form
    135,195.40/202,908.30 = 60,430.60/x
  3. Step 3: Cross multiply
    135,195.40x = 202,908.30 × 60,430.60
  4. Step 4: Simplify right side
    135,195.40x = 12,261,870,313.98
  5. Step 5: Solve for x
    x = 12,261,870,313.98/135,195.40
  6. Step 6: Final answer
    x = 90,697.39

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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.