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Finding the Fourth Proportional to 79,197.95, 118,774.76 and 39,744.47

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Solution

The fourth proportional to 79,197.95, 118,774.76 and 39,744.47 is: 59,605.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,197.95 : 118,774.76 = 39,744.47 : x
  2. Step 2: Convert to fraction form
    79,197.95/118,774.76 = 39,744.47/x
  3. Step 3: Cross multiply
    79,197.95x = 118,774.76 × 39,744.47
  4. Step 4: Simplify right side
    79,197.95x = 4,720,639,983.79
  5. Step 5: Solve for x
    x = 4,720,639,983.79/79,197.95
  6. Step 6: Final answer
    x = 59,605.58

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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.