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Finding the Fourth Proportional to 6,289,786.49, 8,679,809.30 and 3,536,476.47

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Solution

The fourth proportional to 6,289,786.49, 8,679,809.30 and 3,536,476.47 is: 4,880,283.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,289,786.49 : 8,679,809.30 = 3,536,476.47 : x
  2. Step 2: Convert to fraction form
    6,289,786.49/8,679,809.30 = 3,536,476.47/x
  3. Step 3: Cross multiply
    6,289,786.49x = 8,679,809.30 × 3,536,476.47
  4. Step 4: Simplify right side
    6,289,786.49x = 30,695,941,335,854.79
  5. Step 5: Solve for x
    x = 30,695,941,335,854.79/6,289,786.49
  6. Step 6: Final answer
    x = 4,880,283.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.