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Finding the Fourth Proportional to 79,519.58, 109,739.04 and 43,710.50

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Solution

The fourth proportional to 79,519.58, 109,739.04 and 43,710.50 is: 60,321.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,519.58 : 109,739.04 = 43,710.50 : x
  2. Step 2: Convert to fraction form
    79,519.58/109,739.04 = 43,710.50/x
  3. Step 3: Cross multiply
    79,519.58x = 109,739.04 × 43,710.50
  4. Step 4: Simplify right side
    79,519.58x = 4,796,748,307.92
  5. Step 5: Solve for x
    x = 4,796,748,307.92/79,519.58
  6. Step 6: Final answer
    x = 60,321.60

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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.