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Finding the Fourth Proportional to 17,892.75, 26,840.10 and 5,412.47

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Solution

The fourth proportional to 17,892.75, 26,840.10 and 5,412.47 is: 8,118.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,892.75 : 26,840.10 = 5,412.47 : x
  2. Step 2: Convert to fraction form
    17,892.75/26,840.10 = 5,412.47/x
  3. Step 3: Cross multiply
    17,892.75x = 26,840.10 × 5,412.47
  4. Step 4: Simplify right side
    17,892.75x = 145,271,101.85
  5. Step 5: Solve for x
    x = 145,271,101.85/17,892.75
  6. Step 6: Final answer
    x = 8,118.99

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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.