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Finding the Fourth Proportional to 12,700.96, 19,051.36 and 3,935.84

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Solution

The fourth proportional to 12,700.96, 19,051.36 and 3,935.84 is: 5,903.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,700.96 : 19,051.36 = 3,935.84 : x
  2. Step 2: Convert to fraction form
    12,700.96/19,051.36 = 3,935.84/x
  3. Step 3: Cross multiply
    12,700.96x = 19,051.36 × 3,935.84
  4. Step 4: Simplify right side
    12,700.96x = 74,982,999.65
  5. Step 5: Solve for x
    x = 74,982,999.65/12,700.96
  6. Step 6: Final answer
    x = 5,903.73

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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.