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Finding the Fourth Proportional to 18,822.60, 28,233.90 and 18,093.60

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Solution

The fourth proportional to 18,822.60, 28,233.90 and 18,093.60 is: 27,140.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,822.60 : 28,233.90 = 18,093.60 : x
  2. Step 2: Convert to fraction form
    18,822.60/28,233.90 = 18,093.60/x
  3. Step 3: Cross multiply
    18,822.60x = 28,233.90 × 18,093.60
  4. Step 4: Simplify right side
    18,822.60x = 510,852,893.04
  5. Step 5: Solve for x
    x = 510,852,893.04/18,822.60
  6. Step 6: Final answer
    x = 27,140.40

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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.