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Finding the Fourth Proportional to 19,672.78, 29,523.86 and 11,341.67

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Solution

The fourth proportional to 19,672.78, 29,523.86 and 11,341.67 is: 17,020.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,672.78 : 29,523.86 = 11,341.67 : x
  2. Step 2: Convert to fraction form
    19,672.78/29,523.86 = 11,341.67/x
  3. Step 3: Cross multiply
    19,672.78x = 29,523.86 × 11,341.67
  4. Step 4: Simplify right side
    19,672.78x = 334,849,877.25
  5. Step 5: Solve for x
    x = 334,849,877.25/19,672.78
  6. Step 6: Final answer
    x = 17,020.97

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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.