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Finding the Fourth Proportional to 135,530.96, 203,422.16 and 97,619.31

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Solution

The fourth proportional to 135,530.96, 203,422.16 and 97,619.31 is: 146,519.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,530.96 : 203,422.16 = 97,619.31 : x
  2. Step 2: Convert to fraction form
    135,530.96/203,422.16 = 97,619.31/x
  3. Step 3: Cross multiply
    135,530.96x = 203,422.16 × 97,619.31
  4. Step 4: Simplify right side
    135,530.96x = 19,857,931,141.96
  5. Step 5: Solve for x
    x = 19,857,931,141.96/135,530.96
  6. Step 6: Final answer
    x = 146,519.52

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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.