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Finding the Fourth Proportional to 5,282,978.80, 7,924,468.20 and 3,393,410.80

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Solution

The fourth proportional to 5,282,978.80, 7,924,468.20 and 3,393,410.80 is: 5,090,116.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,282,978.80 : 7,924,468.20 = 3,393,410.80 : x
  2. Step 2: Convert to fraction form
    5,282,978.80/7,924,468.20 = 3,393,410.80/x
  3. Step 3: Cross multiply
    5,282,978.80x = 7,924,468.20 × 3,393,410.80
  4. Step 4: Simplify right side
    5,282,978.80x = 26,890,975,974,136.56
  5. Step 5: Solve for x
    x = 26,890,975,974,136.56/5,282,978.80
  6. Step 6: Final answer
    x = 5,090,116.20

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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.