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Finding the Fourth Proportional to 22,940.99, 31,658.88 and 13,865.11

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Solution

The fourth proportional to 22,940.99, 31,658.88 and 13,865.11 is: 19,134.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,940.99 : 31,658.88 = 13,865.11 : x
  2. Step 2: Convert to fraction form
    22,940.99/31,658.88 = 13,865.11/x
  3. Step 3: Cross multiply
    22,940.99x = 31,658.88 × 13,865.11
  4. Step 4: Simplify right side
    22,940.99x = 438,953,853.68
  5. Step 5: Solve for x
    x = 438,953,853.68/22,940.99
  6. Step 6: Final answer
    x = 19,134.04

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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.