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Finding the Fourth Proportional to 19,603.68, 27,058.80 and 11,949.72

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Solution

The fourth proportional to 19,603.68, 27,058.80 and 11,949.72 is: 16,494.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,603.68 : 27,058.80 = 11,949.72 : x
  2. Step 2: Convert to fraction form
    19,603.68/27,058.80 = 11,949.72/x
  3. Step 3: Cross multiply
    19,603.68x = 27,058.80 × 11,949.72
  4. Step 4: Simplify right side
    19,603.68x = 323,345,083.54
  5. Step 5: Solve for x
    x = 323,345,083.54/19,603.68
  6. Step 6: Final answer
    x = 16,494.10

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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.