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Finding the Fourth Proportional to 289,198.08, 399,339.52 and 181,947.52

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Solution

The fourth proportional to 289,198.08, 399,339.52 and 181,947.52 is: 251,242.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,198.08 : 399,339.52 = 181,947.52 : x
  2. Step 2: Convert to fraction form
    289,198.08/399,339.52 = 181,947.52/x
  3. Step 3: Cross multiply
    289,198.08x = 399,339.52 × 181,947.52
  4. Step 4: Simplify right side
    289,198.08x = 72,658,835,301.99
  5. Step 5: Solve for x
    x = 72,658,835,301.99/289,198.08
  6. Step 6: Final answer
    x = 251,242.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.