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Finding the Fourth Proportional to 79,162.29, 118,462.95 and 69,820.56

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Solution

The fourth proportional to 79,162.29, 118,462.95 and 69,820.56 is: 104,483.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,162.29 : 118,462.95 = 69,820.56 : x
  2. Step 2: Convert to fraction form
    79,162.29/118,462.95 = 69,820.56/x
  3. Step 3: Cross multiply
    79,162.29x = 118,462.95 × 69,820.56
  4. Step 4: Simplify right side
    79,162.29x = 8,271,149,508.25
  5. Step 5: Solve for x
    x = 8,271,149,508.25/79,162.29
  6. Step 6: Final answer
    x = 104,483.45

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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.