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Finding the Fourth Proportional to 33,980.99, 46,891.78 and 18,872.78

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Solution

The fourth proportional to 33,980.99, 46,891.78 and 18,872.78 is: 26,043.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,980.99 : 46,891.78 = 18,872.78 : x
  2. Step 2: Convert to fraction form
    33,980.99/46,891.78 = 18,872.78/x
  3. Step 3: Cross multiply
    33,980.99x = 46,891.78 × 18,872.78
  4. Step 4: Simplify right side
    33,980.99x = 884,977,966.11
  5. Step 5: Solve for x
    x = 884,977,966.11/33,980.99
  6. Step 6: Final answer
    x = 26,043.33

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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.