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Finding the Fourth Proportional to 79,542.61, 119,282.64 and 28,929.62

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Solution

The fourth proportional to 79,542.61, 119,282.64 and 28,929.62 is: 43,383.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,542.61 : 119,282.64 = 28,929.62 : x
  2. Step 2: Convert to fraction form
    79,542.61/119,282.64 = 28,929.62/x
  3. Step 3: Cross multiply
    79,542.61x = 119,282.64 × 28,929.62
  4. Step 4: Simplify right side
    79,542.61x = 3,450,801,129.28
  5. Step 5: Solve for x
    x = 3,450,801,129.28/79,542.61
  6. Step 6: Final answer
    x = 43,383.05

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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.