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Finding the Fourth Proportional to 19,251.25, 28,617.10 and 18,683.69

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Solution

The fourth proportional to 19,251.25, 28,617.10 and 18,683.69 is: 27,773.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,251.25 : 28,617.10 = 18,683.69 : x
  2. Step 2: Convert to fraction form
    19,251.25/28,617.10 = 18,683.69/x
  3. Step 3: Cross multiply
    19,251.25x = 28,617.10 × 18,683.69
  4. Step 4: Simplify right side
    19,251.25x = 534,672,835.30
  5. Step 5: Solve for x
    x = 534,672,835.30/19,251.25
  6. Step 6: Final answer
    x = 27,773.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.