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Finding the Fourth Proportional to 19,856.68, 27,400.14 and 11,898.68

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Solution

The fourth proportional to 19,856.68, 27,400.14 and 11,898.68 is: 16,418.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,856.68 : 27,400.14 = 11,898.68 : x
  2. Step 2: Convert to fraction form
    19,856.68/27,400.14 = 11,898.68/x
  3. Step 3: Cross multiply
    19,856.68x = 27,400.14 × 11,898.68
  4. Step 4: Simplify right side
    19,856.68x = 326,025,497.82
  5. Step 5: Solve for x
    x = 326,025,497.82/19,856.68
  6. Step 6: Final answer
    x = 16,418.93

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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.