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Finding the Fourth Proportional to 3,986,902.80, 5,980,354.20 and 3,986,902.80

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Solution

The fourth proportional to 3,986,902.80, 5,980,354.20 and 3,986,902.80 is: 5,980,354.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986,902.80 : 5,980,354.20 = 3,986,902.80 : x
  2. Step 2: Convert to fraction form
    3,986,902.80/5,980,354.20 = 3,986,902.80/x
  3. Step 3: Cross multiply
    3,986,902.80x = 5,980,354.20 × 3,986,902.80
  4. Step 4: Simplify right side
    3,986,902.80x = 23,843,090,904,971.76
  5. Step 5: Solve for x
    x = 23,843,090,904,971.76/3,986,902.80
  6. Step 6: Final answer
    x = 5,980,354.20

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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.