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Finding the Fourth Proportional to 18,922.51, 28,373.88 and 7,066.52

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Solution

The fourth proportional to 18,922.51, 28,373.88 and 7,066.52 is: 10,596.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,922.51 : 28,373.88 = 7,066.52 : x
  2. Step 2: Convert to fraction form
    18,922.51/28,373.88 = 7,066.52/x
  3. Step 3: Cross multiply
    18,922.51x = 28,373.88 × 7,066.52
  4. Step 4: Simplify right side
    18,922.51x = 200,504,590.50
  5. Step 5: Solve for x
    x = 200,504,590.50/18,922.51
  6. Step 6: Final answer
    x = 10,596.09

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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.