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Finding the Fourth Proportional to 11,892.78, 16,412.09 and 6,587.48

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Solution

The fourth proportional to 11,892.78, 16,412.09 and 6,587.48 is: 9,090.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,892.78 : 16,412.09 = 6,587.48 : x
  2. Step 2: Convert to fraction form
    11,892.78/16,412.09 = 6,587.48/x
  3. Step 3: Cross multiply
    11,892.78x = 16,412.09 × 6,587.48
  4. Step 4: Simplify right side
    11,892.78x = 108,114,322.73
  5. Step 5: Solve for x
    x = 108,114,322.73/11,892.78
  6. Step 6: Final answer
    x = 9,090.75

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1.5x scale

Why These Related Problems?

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