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Finding the Fourth Proportional to 335,911.50, 503,876.98 and 86,593.50

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Solution

The fourth proportional to 335,911.50, 503,876.98 and 86,593.50 is: 129,892.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,911.50 : 503,876.98 = 86,593.50 : x
  2. Step 2: Convert to fraction form
    335,911.50/503,876.98 = 86,593.50/x
  3. Step 3: Cross multiply
    335,911.50x = 503,876.98 × 86,593.50
  4. Step 4: Simplify right side
    335,911.50x = 43,632,471,267.63
  5. Step 5: Solve for x
    x = 43,632,471,267.63/335,911.50
  6. Step 6: Final answer
    x = 129,892.76

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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.