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Finding the Fourth Proportional to 479,243.65, 718,789.15 and 159,368.89

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Solution

The fourth proportional to 479,243.65, 718,789.15 and 159,368.89 is: 239,027.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,243.65 : 718,789.15 = 159,368.89 : x
  2. Step 2: Convert to fraction form
    479,243.65/718,789.15 = 159,368.89/x
  3. Step 3: Cross multiply
    479,243.65x = 718,789.15 × 159,368.89
  4. Step 4: Simplify right side
    479,243.65x = 114,552,628,979.54
  5. Step 5: Solve for x
    x = 114,552,628,979.54/479,243.65
  6. Step 6: Final answer
    x = 239,027.95

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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.