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Finding the Fourth Proportional to 19,651.92, 27,118.80 and 10,699.47

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Solution

The fourth proportional to 19,651.92, 27,118.80 and 10,699.47 is: 14,764.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,651.92 : 27,118.80 = 10,699.47 : x
  2. Step 2: Convert to fraction form
    19,651.92/27,118.80 = 10,699.47/x
  3. Step 3: Cross multiply
    19,651.92x = 27,118.80 × 10,699.47
  4. Step 4: Simplify right side
    19,651.92x = 290,156,787.04
  5. Step 5: Solve for x
    x = 290,156,787.04/19,651.92
  6. Step 6: Final answer
    x = 14,764.81

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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.