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Finding the Fourth Proportional to 19,808.88, 27,335.40 and 11,846.40

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Solution

The fourth proportional to 19,808.88, 27,335.40 and 11,846.40 is: 16,347.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,808.88 : 27,335.40 = 11,846.40 : x
  2. Step 2: Convert to fraction form
    19,808.88/27,335.40 = 11,846.40/x
  3. Step 3: Cross multiply
    19,808.88x = 27,335.40 × 11,846.40
  4. Step 4: Simplify right side
    19,808.88x = 323,826,082.56
  5. Step 5: Solve for x
    x = 323,826,082.56/19,808.88
  6. Step 6: Final answer
    x = 16,347.52

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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.