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Finding the Fourth Proportional to 159,990.53, 239,985.77 and 47,667.83

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Solution

The fourth proportional to 159,990.53, 239,985.77 and 47,667.83 is: 71,501.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,990.53 : 239,985.77 = 47,667.83 : x
  2. Step 2: Convert to fraction form
    159,990.53/239,985.77 = 47,667.83/x
  3. Step 3: Cross multiply
    159,990.53x = 239,985.77 × 47,667.83
  4. Step 4: Simplify right side
    159,990.53x = 11,439,599,448.51
  5. Step 5: Solve for x
    x = 11,439,599,448.51/159,990.53
  6. Step 6: Final answer
    x = 71,501.73

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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.