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Finding the Fourth Proportional to 79,083.88, 118,569.82 and 39,612.84

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Solution

The fourth proportional to 79,083.88, 118,569.82 and 39,612.84 is: 59,391.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,083.88 : 118,569.82 = 39,612.84 : x
  2. Step 2: Convert to fraction form
    79,083.88/118,569.82 = 39,612.84/x
  3. Step 3: Cross multiply
    79,083.88x = 118,569.82 × 39,612.84
  4. Step 4: Simplify right side
    79,083.88x = 4,696,887,308.49
  5. Step 5: Solve for x
    x = 4,696,887,308.49/79,083.88
  6. Step 6: Final answer
    x = 59,391.21

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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.