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Finding the Fourth Proportional to 215,898.40, 323,770.80 and 97,626.40

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Solution

The fourth proportional to 215,898.40, 323,770.80 and 97,626.40 is: 146,404.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,898.40 : 323,770.80 = 97,626.40 : x
  2. Step 2: Convert to fraction form
    215,898.40/323,770.80 = 97,626.40/x
  3. Step 3: Cross multiply
    215,898.40x = 323,770.80 × 97,626.40
  4. Step 4: Simplify right side
    215,898.40x = 31,608,577,629.12
  5. Step 5: Solve for x
    x = 31,608,577,629.12/215,898.40
  6. Step 6: Final answer
    x = 146,404.87

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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.