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Finding the Fourth Proportional to 28,897.94, 39,877.22 and 16,321.88

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Solution

The fourth proportional to 28,897.94, 39,877.22 and 16,321.88 is: 22,523.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,897.94 : 39,877.22 = 16,321.88 : x
  2. Step 2: Convert to fraction form
    28,897.94/39,877.22 = 16,321.88/x
  3. Step 3: Cross multiply
    28,897.94x = 39,877.22 × 16,321.88
  4. Step 4: Simplify right side
    28,897.94x = 650,870,918.58
  5. Step 5: Solve for x
    x = 650,870,918.58/28,897.94
  6. Step 6: Final answer
    x = 22,523.09

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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.