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Finding the Fourth Proportional to 19,694.71, 27,179.00 and 10,742.18

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Solution

The fourth proportional to 19,694.71, 27,179.00 and 10,742.18 is: 14,824.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,694.71 : 27,179.00 = 10,742.18 : x
  2. Step 2: Convert to fraction form
    19,694.71/27,179.00 = 10,742.18/x
  3. Step 3: Cross multiply
    19,694.71x = 27,179.00 × 10,742.18
  4. Step 4: Simplify right side
    19,694.71x = 291,961,656.51
  5. Step 5: Solve for x
    x = 291,961,656.51/19,694.71
  6. Step 6: Final answer
    x = 14,824.37

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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.