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Finding the Fourth Proportional to 29,991,211.20, 44,986,816.80 and 20,903,570.10

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Solution

The fourth proportional to 29,991,211.20, 44,986,816.80 and 20,903,570.10 is: 31,355,355.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,991,211.20 : 44,986,816.80 = 20,903,570.10 : x
  2. Step 2: Convert to fraction form
    29,991,211.20/44,986,816.80 = 20,903,570.10/x
  3. Step 3: Cross multiply
    29,991,211.20x = 44,986,816.80 × 20,903,570.10
  4. Step 4: Simplify right side
    29,991,211.20x = 940,385,078,554,657.62
  5. Step 5: Solve for x
    x = 940,385,078,554,657.62/29,991,211.20
  6. Step 6: Final answer
    x = 31,355,355.15

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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.