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Finding the Fourth Proportional to 19,266.92, 26,580.48 and 15,272

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Solution

The fourth proportional to 19,266.92, 26,580.48 and 15,272 is: 21,069.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,266.92 : 26,580.48 = 15,272 : x
  2. Step 2: Convert to fraction form
    19,266.92/26,580.48 = 15,272/x
  3. Step 3: Cross multiply
    19,266.92x = 26,580.48 × 15,272
  4. Step 4: Simplify right side
    19,266.92x = 405,937,090.56
  5. Step 5: Solve for x
    x = 405,937,090.56/19,266.92
  6. Step 6: Final answer
    x = 21,069.12

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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.