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Finding the Fourth Proportional to 18,323.70, 27,485.55 and 16,683.45

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Solution

The fourth proportional to 18,323.70, 27,485.55 and 16,683.45 is: 25,025.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,323.70 : 27,485.55 = 16,683.45 : x
  2. Step 2: Convert to fraction form
    18,323.70/27,485.55 = 16,683.45/x
  3. Step 3: Cross multiply
    18,323.70x = 27,485.55 × 16,683.45
  4. Step 4: Simplify right side
    18,323.70x = 458,553,799.15
  5. Step 5: Solve for x
    x = 458,553,799.15/18,323.70
  6. Step 6: Final answer
    x = 25,025.18

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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.