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Finding the Fourth Proportional to 14,966.66, 20,653.62 and 8,678.63

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Solution

The fourth proportional to 14,966.66, 20,653.62 and 8,678.63 is: 11,976.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,966.66 : 20,653.62 = 8,678.63 : x
  2. Step 2: Convert to fraction form
    14,966.66/20,653.62 = 8,678.63/x
  3. Step 3: Cross multiply
    14,966.66x = 20,653.62 × 8,678.63
  4. Step 4: Simplify right side
    14,966.66x = 179,245,022.87
  5. Step 5: Solve for x
    x = 179,245,022.87/14,966.66
  6. Step 6: Final answer
    x = 11,976.29

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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.