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Finding the Fourth Proportional to 19,718.71, 27,211.08 and 10,766.14

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Solution

The fourth proportional to 19,718.71, 27,211.08 and 10,766.14 is: 14,856.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,718.71 : 27,211.08 = 10,766.14 : x
  2. Step 2: Convert to fraction form
    19,718.71/27,211.08 = 10,766.14/x
  3. Step 3: Cross multiply
    19,718.71x = 27,211.08 × 10,766.14
  4. Step 4: Simplify right side
    19,718.71x = 292,958,296.83
  5. Step 5: Solve for x
    x = 292,958,296.83/19,718.71
  6. Step 6: Final answer
    x = 14,856.87

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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.