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Finding the Fourth Proportional to 28,157.40, 38,861.60 and 16,057.91

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Solution

The fourth proportional to 28,157.40, 38,861.60 and 16,057.91 is: 22,162.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,157.40 : 38,861.60 = 16,057.91 : x
  2. Step 2: Convert to fraction form
    28,157.40/38,861.60 = 16,057.91/x
  3. Step 3: Cross multiply
    28,157.40x = 38,861.60 × 16,057.91
  4. Step 4: Simplify right side
    28,157.40x = 624,035,800.66
  5. Step 5: Solve for x
    x = 624,035,800.66/28,157.40
  6. Step 6: Final answer
    x = 22,162.41

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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.