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Finding the Fourth Proportional to 19,605.72, 27,054.54 and 11,644.68

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Solution

The fourth proportional to 19,605.72, 27,054.54 and 11,644.68 is: 16,068.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,605.72 : 27,054.54 = 11,644.68 : x
  2. Step 2: Convert to fraction form
    19,605.72/27,054.54 = 11,644.68/x
  3. Step 3: Cross multiply
    19,605.72x = 27,054.54 × 11,644.68
  4. Step 4: Simplify right side
    19,605.72x = 315,041,460.85
  5. Step 5: Solve for x
    x = 315,041,460.85/19,605.72
  6. Step 6: Final answer
    x = 16,068.85

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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.