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Finding the Fourth Proportional to 13,959.09, 19,263.47 and 7,671.33

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Solution

The fourth proportional to 13,959.09, 19,263.47 and 7,671.33 is: 10,586.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.09 : 19,263.47 = 7,671.33 : x
  2. Step 2: Convert to fraction form
    13,959.09/19,263.47 = 7,671.33/x
  3. Step 3: Cross multiply
    13,959.09x = 19,263.47 × 7,671.33
  4. Step 4: Simplify right side
    13,959.09x = 147,776,396.96
  5. Step 5: Solve for x
    x = 147,776,396.96/13,959.09
  6. Step 6: Final answer
    x = 10,586.39

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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.