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Finding the Fourth Proportional to 7,265,646.80, 10,879,807.80 and 5,760,213.20

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Solution

The fourth proportional to 7,265,646.80, 10,879,807.80 and 5,760,213.20 is: 8,625,524.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,265,646.80 : 10,879,807.80 = 5,760,213.20 : x
  2. Step 2: Convert to fraction form
    7,265,646.80/10,879,807.80 = 5,760,213.20/x
  3. Step 3: Cross multiply
    7,265,646.80x = 10,879,807.80 × 5,760,213.20
  4. Step 4: Simplify right side
    7,265,646.80x = 62,670,012,503,022.97
  5. Step 5: Solve for x
    x = 62,670,012,503,022.97/7,265,646.80
  6. Step 6: Final answer
    x = 8,625,524.23

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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.