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Finding the Fourth Proportional to 14,179.01, 19,564.79 and 7,891.38

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Solution

The fourth proportional to 14,179.01, 19,564.79 and 7,891.38 is: 10,888.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,179.01 : 19,564.79 = 7,891.38 : x
  2. Step 2: Convert to fraction form
    14,179.01/19,564.79 = 7,891.38/x
  3. Step 3: Cross multiply
    14,179.01x = 19,564.79 × 7,891.38
  4. Step 4: Simplify right side
    14,179.01x = 154,393,153.05
  5. Step 5: Solve for x
    x = 154,393,153.05/14,179.01
  6. Step 6: Final answer
    x = 10,888.86

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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.