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Finding the Fourth Proportional to 264,407,122.90, 396,673,669.95 and 127,980,313.30

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Solution

The fourth proportional to 264,407,122.90, 396,673,669.95 and 127,980,313.30 is: 192,000,956.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,407,122.90 : 396,673,669.95 = 127,980,313.30 : x
  2. Step 2: Convert to fraction form
    264,407,122.90/396,673,669.95 = 127,980,313.30/x
  3. Step 3: Cross multiply
    264,407,122.90x = 396,673,669.95 × 127,980,313.30
  4. Step 4: Simplify right side
    264,407,122.90x = 50,766,420,558,061,792
  5. Step 5: Solve for x
    x = 50,766,420,558,061,792/264,407,122.90
  6. Step 6: Final answer
    x = 192,000,956.71

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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.