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Finding the Fourth Proportional to 73,120.39, 109,693.95 and 23,213.05

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Solution

The fourth proportional to 73,120.39, 109,693.95 and 23,213.05 is: 34,823.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,120.39 : 109,693.95 = 23,213.05 : x
  2. Step 2: Convert to fraction form
    73,120.39/109,693.95 = 23,213.05/x
  3. Step 3: Cross multiply
    73,120.39x = 109,693.95 × 23,213.05
  4. Step 4: Simplify right side
    73,120.39x = 2,546,330,784.76
  5. Step 5: Solve for x
    x = 2,546,330,784.76/73,120.39
  6. Step 6: Final answer
    x = 34,823.81

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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.