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Finding the Fourth Proportional to 18,696.69, 28,065.56 and 9,334.08

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Solution

The fourth proportional to 18,696.69, 28,065.56 and 9,334.08 is: 14,011.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,696.69 : 28,065.56 = 9,334.08 : x
  2. Step 2: Convert to fraction form
    18,696.69/28,065.56 = 9,334.08/x
  3. Step 3: Cross multiply
    18,696.69x = 28,065.56 × 9,334.08
  4. Step 4: Simplify right side
    18,696.69x = 261,966,135.61
  5. Step 5: Solve for x
    x = 261,966,135.61/18,696.69
  6. Step 6: Final answer
    x = 14,011.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.