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Finding the Fourth Proportional to 28,362.75, 42,539.11 and 10,589.42

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Solution

The fourth proportional to 28,362.75, 42,539.11 and 10,589.42 is: 15,882.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,362.75 : 42,539.11 = 10,589.42 : x
  2. Step 2: Convert to fraction form
    28,362.75/42,539.11 = 10,589.42/x
  3. Step 3: Cross multiply
    28,362.75x = 42,539.11 × 10,589.42
  4. Step 4: Simplify right side
    28,362.75x = 450,464,502.22
  5. Step 5: Solve for x
    x = 450,464,502.22/28,362.75
  6. Step 6: Final answer
    x = 15,882.26

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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.