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Finding the Fourth Proportional to 66,633.31, 99,935.24 and 19,238.11

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Solution

The fourth proportional to 66,633.31, 99,935.24 and 19,238.11 is: 28,852.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,633.31 : 99,935.24 = 19,238.11 : x
  2. Step 2: Convert to fraction form
    66,633.31/99,935.24 = 19,238.11/x
  3. Step 3: Cross multiply
    66,633.31x = 99,935.24 × 19,238.11
  4. Step 4: Simplify right side
    66,633.31x = 1,922,565,140.00
  5. Step 5: Solve for x
    x = 1,922,565,140.00/66,633.31
  6. Step 6: Final answer
    x = 28,852.91

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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.