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Finding the Fourth Proportional to 79,207.85, 118,528.67 and 68,800.50

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Solution

The fourth proportional to 79,207.85, 118,528.67 and 68,800.50 is: 102,954.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,207.85 : 118,528.67 = 68,800.50 : x
  2. Step 2: Convert to fraction form
    79,207.85/118,528.67 = 68,800.50/x
  3. Step 3: Cross multiply
    79,207.85x = 118,528.67 × 68,800.50
  4. Step 4: Simplify right side
    79,207.85x = 8,154,831,167.69
  5. Step 5: Solve for x
    x = 8,154,831,167.69/79,207.85
  6. Step 6: Final answer
    x = 102,954.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.