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Finding the Fourth Proportional to 19,696.11, 29,557.77 and 7,848.72

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Solution

The fourth proportional to 19,696.11, 29,557.77 and 7,848.72 is: 11,778.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,696.11 : 29,557.77 = 7,848.72 : x
  2. Step 2: Convert to fraction form
    19,696.11/29,557.77 = 7,848.72/x
  3. Step 3: Cross multiply
    19,696.11x = 29,557.77 × 7,848.72
  4. Step 4: Simplify right side
    19,696.11x = 231,990,660.55
  5. Step 5: Solve for x
    x = 231,990,660.55/19,696.11
  6. Step 6: Final answer
    x = 11,778.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.