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Finding the Fourth Proportional to 15,897.52, 21,939.26 and 8,823.94

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Solution

The fourth proportional to 15,897.52, 21,939.26 and 8,823.94 is: 12,177.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,897.52 : 21,939.26 = 8,823.94 : x
  2. Step 2: Convert to fraction form
    15,897.52/21,939.26 = 8,823.94/x
  3. Step 3: Cross multiply
    15,897.52x = 21,939.26 × 8,823.94
  4. Step 4: Simplify right side
    15,897.52x = 193,590,614.92
  5. Step 5: Solve for x
    x = 193,590,614.92/15,897.52
  6. Step 6: Final answer
    x = 12,177.41

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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.