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Finding the Fourth Proportional to 79,698.74, 109,985.04 and 43,889.85

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Solution

The fourth proportional to 79,698.74, 109,985.04 and 43,889.85 is: 60,568.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,698.74 : 109,985.04 = 43,889.85 : x
  2. Step 2: Convert to fraction form
    79,698.74/109,985.04 = 43,889.85/x
  3. Step 3: Cross multiply
    79,698.74x = 109,985.04 × 43,889.85
  4. Step 4: Simplify right side
    79,698.74x = 4,827,226,907.84
  5. Step 5: Solve for x
    x = 4,827,226,907.84/79,698.74
  6. Step 6: Final answer
    x = 60,568.43

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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.