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Finding the Fourth Proportional to 73,330.98, 109,965.45 and 31,209.36

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Solution

The fourth proportional to 73,330.98, 109,965.45 and 31,209.36 is: 46,800.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,330.98 : 109,965.45 = 31,209.36 : x
  2. Step 2: Convert to fraction form
    73,330.98/109,965.45 = 31,209.36/x
  3. Step 3: Cross multiply
    73,330.98x = 109,965.45 × 31,209.36
  4. Step 4: Simplify right side
    73,330.98x = 3,431,951,316.61
  5. Step 5: Solve for x
    x = 3,431,951,316.61/73,330.98
  6. Step 6: Final answer
    x = 46,800.84

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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.