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Finding the Fourth Proportional to 79,179.84, 118,781.28 and 23,780.16

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Solution

The fourth proportional to 79,179.84, 118,781.28 and 23,780.16 is: 35,673.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,179.84 : 118,781.28 = 23,780.16 : x
  2. Step 2: Convert to fraction form
    79,179.84/118,781.28 = 23,780.16/x
  3. Step 3: Cross multiply
    79,179.84x = 118,781.28 × 23,780.16
  4. Step 4: Simplify right side
    79,179.84x = 2,824,637,843.40
  5. Step 5: Solve for x
    x = 2,824,637,843.40/79,179.84
  6. Step 6: Final answer
    x = 35,673.70

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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.