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Finding the Fourth Proportional to 368,376.51, 508,354.52 and 207,231.51

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Solution

The fourth proportional to 368,376.51, 508,354.52 and 207,231.51 is: 285,976.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,376.51 : 508,354.52 = 207,231.51 : x
  2. Step 2: Convert to fraction form
    368,376.51/508,354.52 = 207,231.51/x
  3. Step 3: Cross multiply
    368,376.51x = 508,354.52 × 207,231.51
  4. Step 4: Simplify right side
    368,376.51x = 105,347,073,758.77
  5. Step 5: Solve for x
    x = 105,347,073,758.77/368,376.51
  6. Step 6: Final answer
    x = 285,976.63

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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.