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Finding the Fourth Proportional to 18,874.68, 28,313.46 and 5,023.32

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Solution

The fourth proportional to 18,874.68, 28,313.46 and 5,023.32 is: 7,535.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,874.68 : 28,313.46 = 5,023.32 : x
  2. Step 2: Convert to fraction form
    18,874.68/28,313.46 = 5,023.32/x
  3. Step 3: Cross multiply
    18,874.68x = 28,313.46 × 5,023.32
  4. Step 4: Simplify right side
    18,874.68x = 142,227,569.89
  5. Step 5: Solve for x
    x = 142,227,569.89/18,874.68
  6. Step 6: Final answer
    x = 7,535.36

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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.