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Finding the Fourth Proportional to 19,662.89, 27,134.53 and 11,164.93

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Solution

The fourth proportional to 19,662.89, 27,134.53 and 11,164.93 is: 15,407.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,662.89 : 27,134.53 = 11,164.93 : x
  2. Step 2: Convert to fraction form
    19,662.89/27,134.53 = 11,164.93/x
  3. Step 3: Cross multiply
    19,662.89x = 27,134.53 × 11,164.93
  4. Step 4: Simplify right side
    19,662.89x = 302,955,032.28
  5. Step 5: Solve for x
    x = 302,955,032.28/19,662.89
  6. Step 6: Final answer
    x = 15,407.46

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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.