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Finding the Fourth Proportional to 19,619.01, 27,075.51 and 11,965.10

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Solution

The fourth proportional to 19,619.01, 27,075.51 and 11,965.10 is: 16,512.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,619.01 : 27,075.51 = 11,965.10 : x
  2. Step 2: Convert to fraction form
    19,619.01/27,075.51 = 11,965.10/x
  3. Step 3: Cross multiply
    19,619.01x = 27,075.51 × 11,965.10
  4. Step 4: Simplify right side
    19,619.01x = 323,961,049.32
  5. Step 5: Solve for x
    x = 323,961,049.32/19,619.01
  6. Step 6: Final answer
    x = 16,512.61

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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.