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Finding the Fourth Proportional to 19,581, 27,044.22 and 12,896.50

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Solution

The fourth proportional to 19,581, 27,044.22 and 12,896.50 is: 17,811.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,581 : 27,044.22 = 12,896.50 : x
  2. Step 2: Convert to fraction form
    19,581/27,044.22 = 12,896.50/x
  3. Step 3: Cross multiply
    19,581x = 27,044.22 × 12,896.50
  4. Step 4: Simplify right side
    19,581x = 348,775,783.23
  5. Step 5: Solve for x
    x = 348,775,783.23/19,581
  6. Step 6: Final answer
    x = 17,811.95

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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.