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Finding the Fourth Proportional to 19,691.65, 27,174.82 and 10,739.48

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Solution

The fourth proportional to 19,691.65, 27,174.82 and 10,739.48 is: 14,820.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,691.65 : 27,174.82 = 10,739.48 : x
  2. Step 2: Convert to fraction form
    19,691.65/27,174.82 = 10,739.48/x
  3. Step 3: Cross multiply
    19,691.65x = 27,174.82 × 10,739.48
  4. Step 4: Simplify right side
    19,691.65x = 291,843,462.74
  5. Step 5: Solve for x
    x = 291,843,462.74/19,691.65
  6. Step 6: Final answer
    x = 14,820.67

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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.