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Finding the Fourth Proportional to 14,107.80, 19,472.49 and 8,799.51

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Solution

The fourth proportional to 14,107.80, 19,472.49 and 8,799.51 is: 12,145.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,107.80 : 19,472.49 = 8,799.51 : x
  2. Step 2: Convert to fraction form
    14,107.80/19,472.49 = 8,799.51/x
  3. Step 3: Cross multiply
    14,107.80x = 19,472.49 × 8,799.51
  4. Step 4: Simplify right side
    14,107.80x = 171,348,370.48
  5. Step 5: Solve for x
    x = 171,348,370.48/14,107.80
  6. Step 6: Final answer
    x = 12,145.65

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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.