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Finding the Fourth Proportional to 159,628.78, 239,480.76 and 47,309.93

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Solution

The fourth proportional to 159,628.78, 239,480.76 and 47,309.93 is: 70,976.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,628.78 : 239,480.76 = 47,309.93 : x
  2. Step 2: Convert to fraction form
    159,628.78/239,480.76 = 47,309.93/x
  3. Step 3: Cross multiply
    159,628.78x = 239,480.76 × 47,309.93
  4. Step 4: Simplify right side
    159,628.78x = 11,329,817,991.95
  5. Step 5: Solve for x
    x = 11,329,817,991.95/159,628.78
  6. Step 6: Final answer
    x = 70,976.04

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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.