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Finding the Fourth Proportional to 5,276,404.80, 7,914,607.20 and 3,148,891.20

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Solution

The fourth proportional to 5,276,404.80, 7,914,607.20 and 3,148,891.20 is: 4,723,336.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276,404.80 : 7,914,607.20 = 3,148,891.20 : x
  2. Step 2: Convert to fraction form
    5,276,404.80/7,914,607.20 = 3,148,891.20/x
  3. Step 3: Cross multiply
    5,276,404.80x = 7,914,607.20 × 3,148,891.20
  4. Step 4: Simplify right side
    5,276,404.80x = 24,922,236,963,536.64
  5. Step 5: Solve for x
    x = 24,922,236,963,536.64/5,276,404.80
  6. Step 6: Final answer
    x = 4,723,336.80

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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.