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Finding the Fourth Proportional to 28,031, 42,057.70 and 11,392.33

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Solution

The fourth proportional to 28,031, 42,057.70 and 11,392.33 is: 17,093.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,031 : 42,057.70 = 11,392.33 : x
  2. Step 2: Convert to fraction form
    28,031/42,057.70 = 11,392.33/x
  3. Step 3: Cross multiply
    28,031x = 42,057.70 × 11,392.33
  4. Step 4: Simplify right side
    28,031x = 479,135,197.44
  5. Step 5: Solve for x
    x = 479,135,197.44/28,031
  6. Step 6: Final answer
    x = 17,093.05

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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.