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Finding the Fourth Proportional to 79,315.91, 109,459.01 and 43,507.43

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Solution

The fourth proportional to 79,315.91, 109,459.01 and 43,507.43 is: 60,041.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,315.91 : 109,459.01 = 43,507.43 : x
  2. Step 2: Convert to fraction form
    79,315.91/109,459.01 = 43,507.43/x
  3. Step 3: Cross multiply
    79,315.91x = 109,459.01 × 43,507.43
  4. Step 4: Simplify right side
    79,315.91x = 4,762,280,215.44
  5. Step 5: Solve for x
    x = 4,762,280,215.44/79,315.91
  6. Step 6: Final answer
    x = 60,041.93

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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.