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Finding the Fourth Proportional to 19,687,240.80, 29,530,861.20 and 19,687,240.80

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Solution

The fourth proportional to 19,687,240.80, 29,530,861.20 and 19,687,240.80 is: 29,530,861.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,687,240.80 : 29,530,861.20 = 19,687,240.80 : x
  2. Step 2: Convert to fraction form
    19,687,240.80/29,530,861.20 = 19,687,240.80/x
  3. Step 3: Cross multiply
    19,687,240.80x = 29,530,861.20 × 19,687,240.80
  4. Step 4: Simplify right side
    19,687,240.80x = 581,381,175,475,777
  5. Step 5: Solve for x
    x = 581,381,175,475,777/19,687,240.80
  6. Step 6: Final answer
    x = 29,530,861.20

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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.