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Finding the Fourth Proportional to 13,732.88, 18,945.02 and 8,065.82

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Solution

The fourth proportional to 13,732.88, 18,945.02 and 8,065.82 is: 11,127.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,732.88 : 18,945.02 = 8,065.82 : x
  2. Step 2: Convert to fraction form
    13,732.88/18,945.02 = 8,065.82/x
  3. Step 3: Cross multiply
    13,732.88x = 18,945.02 × 8,065.82
  4. Step 4: Simplify right side
    13,732.88x = 152,807,188.74
  5. Step 5: Solve for x
    x = 152,807,188.74/13,732.88
  6. Step 6: Final answer
    x = 11,127.11

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1.5x scale

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.