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Finding the Fourth Proportional to 22,673.25, 31,289.22 and 13,239.99

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Solution

The fourth proportional to 22,673.25, 31,289.22 and 13,239.99 is: 18,271.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,673.25 : 31,289.22 = 13,239.99 : x
  2. Step 2: Convert to fraction form
    22,673.25/31,289.22 = 13,239.99/x
  3. Step 3: Cross multiply
    22,673.25x = 31,289.22 × 13,239.99
  4. Step 4: Simplify right side
    22,673.25x = 414,268,959.91
  5. Step 5: Solve for x
    x = 414,268,959.91/22,673.25
  6. Step 6: Final answer
    x = 18,271.27

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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.