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Finding the Fourth Proportional to 14,463.25, 19,959.29 and 7,839.25

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Solution

The fourth proportional to 14,463.25, 19,959.29 and 7,839.25 is: 10,818.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,463.25 : 19,959.29 = 7,839.25 : x
  2. Step 2: Convert to fraction form
    14,463.25/19,959.29 = 7,839.25/x
  3. Step 3: Cross multiply
    14,463.25x = 19,959.29 × 7,839.25
  4. Step 4: Simplify right side
    14,463.25x = 156,465,864.13
  5. Step 5: Solve for x
    x = 156,465,864.13/14,463.25
  6. Step 6: Final answer
    x = 10,818.17

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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.