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Finding the Fourth Proportional to 275,431.60, 413,189.04 and 97,896.40

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Solution

The fourth proportional to 275,431.60, 413,189.04 and 97,896.40 is: 146,859.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,431.60 : 413,189.04 = 97,896.40 : x
  2. Step 2: Convert to fraction form
    275,431.60/413,189.04 = 97,896.40/x
  3. Step 3: Cross multiply
    275,431.60x = 413,189.04 × 97,896.40
  4. Step 4: Simplify right side
    275,431.60x = 40,449,719,535.46
  5. Step 5: Solve for x
    x = 40,449,719,535.46/275,431.60
  6. Step 6: Final answer
    x = 146,859.40

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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.