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Finding the Fourth Proportional to 19,997.71, 27,597.99 and 12,042.50

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Solution

The fourth proportional to 19,997.71, 27,597.99 and 12,042.50 is: 16,619.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,997.71 : 27,597.99 = 12,042.50 : x
  2. Step 2: Convert to fraction form
    19,997.71/27,597.99 = 12,042.50/x
  3. Step 3: Cross multiply
    19,997.71x = 27,597.99 × 12,042.50
  4. Step 4: Simplify right side
    19,997.71x = 332,348,794.58
  5. Step 5: Solve for x
    x = 332,348,794.58/19,997.71
  6. Step 6: Final answer
    x = 16,619.34

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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.