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Finding the Fourth Proportional to 14,963,978.34, 20,650,519.89 and 8,767,542.14

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Solution

The fourth proportional to 14,963,978.34, 20,650,519.89 and 8,767,542.14 is: 12,099,342.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,963,978.34 : 20,650,519.89 = 8,767,542.14 : x
  2. Step 2: Convert to fraction form
    14,963,978.34/20,650,519.89 = 8,767,542.14/x
  3. Step 3: Cross multiply
    14,963,978.34x = 20,650,519.89 × 8,767,542.14
  4. Step 4: Simplify right side
    14,963,978.34x = 181,054,303,245,230.56
  5. Step 5: Solve for x
    x = 181,054,303,245,230.56/14,963,978.34
  6. Step 6: Final answer
    x = 12,099,342.78

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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.