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Finding the Fourth Proportional to 18,765.96, 28,063.62 and 14,025.48

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Solution

The fourth proportional to 18,765.96, 28,063.62 and 14,025.48 is: 20,974.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,765.96 : 28,063.62 = 14,025.48 : x
  2. Step 2: Convert to fraction form
    18,765.96/28,063.62 = 14,025.48/x
  3. Step 3: Cross multiply
    18,765.96x = 28,063.62 × 14,025.48
  4. Step 4: Simplify right side
    18,765.96x = 393,605,741.04
  5. Step 5: Solve for x
    x = 393,605,741.04/18,765.96
  6. Step 6: Final answer
    x = 20,974.45

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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.