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Finding the Fourth Proportional to 33,915.69, 46,809.12 and 19,765.80

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Solution

The fourth proportional to 33,915.69, 46,809.12 and 19,765.80 is: 27,279.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,915.69 : 46,809.12 = 19,765.80 : x
  2. Step 2: Convert to fraction form
    33,915.69/46,809.12 = 19,765.80/x
  3. Step 3: Cross multiply
    33,915.69x = 46,809.12 × 19,765.80
  4. Step 4: Simplify right side
    33,915.69x = 925,219,704.10
  5. Step 5: Solve for x
    x = 925,219,704.10/33,915.69
  6. Step 6: Final answer
    x = 27,279.99

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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.