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Finding the Fourth Proportional to 18,793.59, 28,192.71 and 6,143.06

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Solution

The fourth proportional to 18,793.59, 28,192.71 and 6,143.06 is: 9,215.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.59 : 28,192.71 = 6,143.06 : x
  2. Step 2: Convert to fraction form
    18,793.59/28,192.71 = 6,143.06/x
  3. Step 3: Cross multiply
    18,793.59x = 28,192.71 × 6,143.06
  4. Step 4: Simplify right side
    18,793.59x = 173,189,368.13
  5. Step 5: Solve for x
    x = 173,189,368.13/18,793.59
  6. Step 6: Final answer
    x = 9,215.34

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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.