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Finding the Fourth Proportional to 77,799.33, 116,711.31 and 27,878.32

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Solution

The fourth proportional to 77,799.33, 116,711.31 and 27,878.32 is: 41,821.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,799.33 : 116,711.31 = 27,878.32 : x
  2. Step 2: Convert to fraction form
    77,799.33/116,711.31 = 27,878.32/x
  3. Step 3: Cross multiply
    77,799.33x = 116,711.31 × 27,878.32
  4. Step 4: Simplify right side
    77,799.33x = 3,253,715,247.80
  5. Step 5: Solve for x
    x = 3,253,715,247.80/77,799.33
  6. Step 6: Final answer
    x = 41,821.89

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1.5x scale

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.