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Finding the Fourth Proportional to 18,972.63, 28,458.54 and 6,323.30

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Solution

The fourth proportional to 18,972.63, 28,458.54 and 6,323.30 is: 9,484.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.63 : 28,458.54 = 6,323.30 : x
  2. Step 2: Convert to fraction form
    18,972.63/28,458.54 = 6,323.30/x
  3. Step 3: Cross multiply
    18,972.63x = 28,458.54 × 6,323.30
  4. Step 4: Simplify right side
    18,972.63x = 179,951,874.12
  5. Step 5: Solve for x
    x = 179,951,874.12/18,972.63
  6. Step 6: Final answer
    x = 9,484.82

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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.