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Finding the Fourth Proportional to 73,191,097.20, 109,786,645.80 and 32,880,313.20

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Solution

The fourth proportional to 73,191,097.20, 109,786,645.80 and 32,880,313.20 is: 49,320,469.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,191,097.20 : 109,786,645.80 = 32,880,313.20 : x
  2. Step 2: Convert to fraction form
    73,191,097.20/109,786,645.80 = 32,880,313.20/x
  3. Step 3: Cross multiply
    73,191,097.20x = 109,786,645.80 × 32,880,313.20
  4. Step 4: Simplify right side
    73,191,097.20x = 3,609,819,299,081,464.50
  5. Step 5: Solve for x
    x = 3,609,819,299,081,464.50/73,191,097.20
  6. Step 6: Final answer
    x = 49,320,469.80

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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.