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Finding the Fourth Proportional to 106,616.36, 159,956.50 and 31,739.12

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Solution

The fourth proportional to 106,616.36, 159,956.50 and 31,739.12 is: 47,618.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,616.36 : 159,956.50 = 31,739.12 : x
  2. Step 2: Convert to fraction form
    106,616.36/159,956.50 = 31,739.12/x
  3. Step 3: Cross multiply
    106,616.36x = 159,956.50 × 31,739.12
  4. Step 4: Simplify right side
    106,616.36x = 5,076,878,548.28
  5. Step 5: Solve for x
    x = 5,076,878,548.28/106,616.36
  6. Step 6: Final answer
    x = 47,618.19

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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.