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Finding the Fourth Proportional to 67,651.36, 101,474.52 and 20,904.16

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Solution

The fourth proportional to 67,651.36, 101,474.52 and 20,904.16 is: 31,355.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,651.36 : 101,474.52 = 20,904.16 : x
  2. Step 2: Convert to fraction form
    67,651.36/101,474.52 = 20,904.16/x
  3. Step 3: Cross multiply
    67,651.36x = 101,474.52 × 20,904.16
  4. Step 4: Simplify right side
    67,651.36x = 2,121,239,602.00
  5. Step 5: Solve for x
    x = 2,121,239,602.00/67,651.36
  6. Step 6: Final answer
    x = 31,355.46

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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.