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Finding the Fourth Proportional to 18,794.70, 28,195.83 and 5,646.51

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Solution

The fourth proportional to 18,794.70, 28,195.83 and 5,646.51 is: 8,470.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,794.70 : 28,195.83 = 5,646.51 : x
  2. Step 2: Convert to fraction form
    18,794.70/28,195.83 = 5,646.51/x
  3. Step 3: Cross multiply
    18,794.70x = 28,195.83 × 5,646.51
  4. Step 4: Simplify right side
    18,794.70x = 159,208,036.05
  5. Step 5: Solve for x
    x = 159,208,036.05/18,794.70
  6. Step 6: Final answer
    x = 8,470.90

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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.