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Finding the Fourth Proportional to 17,221.91, 25,833.50 and 4,742.90

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Solution

The fourth proportional to 17,221.91, 25,833.50 and 4,742.90 is: 7,114.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,221.91 : 25,833.50 = 4,742.90 : x
  2. Step 2: Convert to fraction form
    17,221.91/25,833.50 = 4,742.90/x
  3. Step 3: Cross multiply
    17,221.91x = 25,833.50 × 4,742.90
  4. Step 4: Simplify right side
    17,221.91x = 122,525,554.27
  5. Step 5: Solve for x
    x = 122,525,554.27/17,221.91
  6. Step 6: Final answer
    x = 7,114.52

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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.