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Finding the Fourth Proportional to 33,618, 46,395.72 and 18,716.88

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Solution

The fourth proportional to 33,618, 46,395.72 and 18,716.88 is: 25,830.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,618 : 46,395.72 = 18,716.88 : x
  2. Step 2: Convert to fraction form
    33,618/46,395.72 = 18,716.88/x
  3. Step 3: Cross multiply
    33,618x = 46,395.72 × 18,716.88
  4. Step 4: Simplify right side
    33,618x = 868,383,123.75
  5. Step 5: Solve for x
    x = 868,383,123.75/33,618
  6. Step 6: Final answer
    x = 25,830.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.