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Finding the Fourth Proportional to 19,619.98, 27,076.12 and 10,668.10

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Solution

The fourth proportional to 19,619.98, 27,076.12 and 10,668.10 is: 14,722.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,619.98 : 27,076.12 = 10,668.10 : x
  2. Step 2: Convert to fraction form
    19,619.98/27,076.12 = 10,668.10/x
  3. Step 3: Cross multiply
    19,619.98x = 27,076.12 × 10,668.10
  4. Step 4: Simplify right side
    19,619.98x = 288,850,755.77
  5. Step 5: Solve for x
    x = 288,850,755.77/19,619.98
  6. Step 6: Final answer
    x = 14,722.28

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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.