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Finding the Fourth Proportional to 266,193,012.80, 398,617,672.80 and 174,821,902.40

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Solution

The fourth proportional to 266,193,012.80, 398,617,672.80 and 174,821,902.40 is: 261,791,619.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,193,012.80 : 398,617,672.80 = 174,821,902.40 : x
  2. Step 2: Convert to fraction form
    266,193,012.80/398,617,672.80 = 174,821,902.40/x
  3. Step 3: Cross multiply
    266,193,012.80x = 398,617,672.80 × 174,821,902.40
  4. Step 4: Simplify right side
    266,193,012.80x = 69,687,099,889,156,736
  5. Step 5: Solve for x
    x = 69,687,099,889,156,736/266,193,012.80
  6. Step 6: Final answer
    x = 261,791,619.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.