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Finding the Fourth Proportional to 9,937,990.80, 14,906,986.20 and 3,206,404.80

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Solution

The fourth proportional to 9,937,990.80, 14,906,986.20 and 3,206,404.80 is: 4,809,607.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,937,990.80 : 14,906,986.20 = 3,206,404.80 : x
  2. Step 2: Convert to fraction form
    9,937,990.80/14,906,986.20 = 3,206,404.80/x
  3. Step 3: Cross multiply
    9,937,990.80x = 14,906,986.20 × 3,206,404.80
  4. Step 4: Simplify right side
    9,937,990.80x = 47,797,832,105,213.76
  5. Step 5: Solve for x
    x = 47,797,832,105,213.76/9,937,990.80
  6. Step 6: Final answer
    x = 4,809,607.20

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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.