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Finding the Fourth Proportional to 11,355.99, 15,672.92 and 6,818.97

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Solution

The fourth proportional to 11,355.99, 15,672.92 and 6,818.97 is: 9,411.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,355.99 : 15,672.92 = 6,818.97 : x
  2. Step 2: Convert to fraction form
    11,355.99/15,672.92 = 6,818.97/x
  3. Step 3: Cross multiply
    11,355.99x = 15,672.92 × 6,818.97
  4. Step 4: Simplify right side
    11,355.99x = 106,873,171.29
  5. Step 5: Solve for x
    x = 106,873,171.29/11,355.99
  6. Step 6: Final answer
    x = 9,411.17

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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.