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Finding the Fourth Proportional to 13,332, 18,405.60 and 8,028

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Solution

The fourth proportional to 13,332, 18,405.60 and 8,028 is: 11,083.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,332 : 18,405.60 = 8,028 : x
  2. Step 2: Convert to fraction form
    13,332/18,405.60 = 8,028/x
  3. Step 3: Cross multiply
    13,332x = 18,405.60 × 8,028
  4. Step 4: Simplify right side
    13,332x = 147,760,156.80
  5. Step 5: Solve for x
    x = 147,760,156.80/13,332
  6. Step 6: Final answer
    x = 11,083.12

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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.