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Finding the Fourth Proportional to 18,809.48, 25,956 and 10,309.94

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Solution

The fourth proportional to 18,809.48, 25,956 and 10,309.94 is: 14,227.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,809.48 : 25,956 = 10,309.94 : x
  2. Step 2: Convert to fraction form
    18,809.48/25,956 = 10,309.94/x
  3. Step 3: Cross multiply
    18,809.48x = 25,956 × 10,309.94
  4. Step 4: Simplify right side
    18,809.48x = 267,604,802.64
  5. Step 5: Solve for x
    x = 267,604,802.64/18,809.48
  6. Step 6: Final answer
    x = 14,227.12

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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.