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Finding the Fourth Proportional to 30,585.96, 42,199.20 and 17,155.44

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Solution

The fourth proportional to 30,585.96, 42,199.20 and 17,155.44 is: 23,669.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,585.96 : 42,199.20 = 17,155.44 : x
  2. Step 2: Convert to fraction form
    30,585.96/42,199.20 = 17,155.44/x
  3. Step 3: Cross multiply
    30,585.96x = 42,199.20 × 17,155.44
  4. Step 4: Simplify right side
    30,585.96x = 723,945,843.65
  5. Step 5: Solve for x
    x = 723,945,843.65/30,585.96
  6. Step 6: Final answer
    x = 23,669.22

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.