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Finding the Fourth Proportional to 19,616.70, 27,069.92 and 10,664.16

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Solution

The fourth proportional to 19,616.70, 27,069.92 and 10,664.16 is: 14,715.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,616.70 : 27,069.92 = 10,664.16 : x
  2. Step 2: Convert to fraction form
    19,616.70/27,069.92 = 10,664.16/x
  3. Step 3: Cross multiply
    19,616.70x = 27,069.92 × 10,664.16
  4. Step 4: Simplify right side
    19,616.70x = 288,677,958.07
  5. Step 5: Solve for x
    x = 288,677,958.07/19,616.70
  6. Step 6: Final answer
    x = 14,715.93

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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.