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Finding the Fourth Proportional to 28,194.98, 38,913.21 and 16,255.98

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Solution

The fourth proportional to 28,194.98, 38,913.21 and 16,255.98 is: 22,435.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,194.98 : 38,913.21 = 16,255.98 : x
  2. Step 2: Convert to fraction form
    28,194.98/38,913.21 = 16,255.98/x
  3. Step 3: Cross multiply
    28,194.98x = 38,913.21 × 16,255.98
  4. Step 4: Simplify right side
    28,194.98x = 632,572,363.50
  5. Step 5: Solve for x
    x = 632,572,363.50/28,194.98
  6. Step 6: Final answer
    x = 22,435.64

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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.