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Finding the Fourth Proportional to 319,916.61, 479,713.86 and 106,608.96

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Solution

The fourth proportional to 319,916.61, 479,713.86 and 106,608.96 is: 159,859.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,916.61 : 479,713.86 = 106,608.96 : x
  2. Step 2: Convert to fraction form
    319,916.61/479,713.86 = 106,608.96/x
  3. Step 3: Cross multiply
    319,916.61x = 479,713.86 × 106,608.96
  4. Step 4: Simplify right side
    319,916.61x = 51,141,795,712.19
  5. Step 5: Solve for x
    x = 51,141,795,712.19/319,916.61
  6. Step 6: Final answer
    x = 159,859.77

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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.