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Finding the Fourth Proportional to 18,381.60, 25,477.20 and 16,632

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Solution

The fourth proportional to 18,381.60, 25,477.20 and 16,632 is: 23,052.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.60 : 25,477.20 = 16,632 : x
  2. Step 2: Convert to fraction form
    18,381.60/25,477.20 = 16,632/x
  3. Step 3: Cross multiply
    18,381.60x = 25,477.20 × 16,632
  4. Step 4: Simplify right side
    18,381.60x = 423,736,790.40
  5. Step 5: Solve for x
    x = 423,736,790.40/18,381.60
  6. Step 6: Final answer
    x = 23,052.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.