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Finding the Fourth Proportional to 18,895.64, 28,317.90 and 7,202.48

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Solution

The fourth proportional to 18,895.64, 28,317.90 and 7,202.48 is: 10,793.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,895.64 : 28,317.90 = 7,202.48 : x
  2. Step 2: Convert to fraction form
    18,895.64/28,317.90 = 7,202.48/x
  3. Step 3: Cross multiply
    18,895.64x = 28,317.90 × 7,202.48
  4. Step 4: Simplify right side
    18,895.64x = 203,959,108.39
  5. Step 5: Solve for x
    x = 203,959,108.39/18,895.64
  6. Step 6: Final answer
    x = 10,793.98

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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.