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Finding the Fourth Proportional to 18,893.98, 28,331.19 and 5,565.24

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Solution

The fourth proportional to 18,893.98, 28,331.19 and 5,565.24 is: 8,344.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,893.98 : 28,331.19 = 5,565.24 : x
  2. Step 2: Convert to fraction form
    18,893.98/28,331.19 = 5,565.24/x
  3. Step 3: Cross multiply
    18,893.98x = 28,331.19 × 5,565.24
  4. Step 4: Simplify right side
    18,893.98x = 157,669,871.84
  5. Step 5: Solve for x
    x = 157,669,871.84/18,893.98
  6. Step 6: Final answer
    x = 8,344.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.