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Finding the Fourth Proportional to 19,751.68, 29,554.72 and 11,858.99

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Solution

The fourth proportional to 19,751.68, 29,554.72 and 11,858.99 is: 17,744.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,751.68 : 29,554.72 = 11,858.99 : x
  2. Step 2: Convert to fraction form
    19,751.68/29,554.72 = 11,858.99/x
  3. Step 3: Cross multiply
    19,751.68x = 29,554.72 × 11,858.99
  4. Step 4: Simplify right side
    19,751.68x = 350,489,184.46
  5. Step 5: Solve for x
    x = 350,489,184.46/19,751.68
  6. Step 6: Final answer
    x = 17,744.78

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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.