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Finding the Fourth Proportional to 79,459.89, 109,655.55 and 43,161.67

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Solution

The fourth proportional to 79,459.89, 109,655.55 and 43,161.67 is: 59,563.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,459.89 : 109,655.55 = 43,161.67 : x
  2. Step 2: Convert to fraction form
    79,459.89/109,655.55 = 43,161.67/x
  3. Step 3: Cross multiply
    79,459.89x = 109,655.55 × 43,161.67
  4. Step 4: Simplify right side
    79,459.89x = 4,732,916,758.82
  5. Step 5: Solve for x
    x = 4,732,916,758.82/79,459.89
  6. Step 6: Final answer
    x = 59,563.60

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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.