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Finding the Fourth Proportional to 326,091.94, 489,158.79 and 112,880.38

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Solution

The fourth proportional to 326,091.94, 489,158.79 and 112,880.38 is: 169,327.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,091.94 : 489,158.79 = 112,880.38 : x
  2. Step 2: Convert to fraction form
    326,091.94/489,158.79 = 112,880.38/x
  3. Step 3: Cross multiply
    326,091.94x = 489,158.79 × 112,880.38
  4. Step 4: Simplify right side
    326,091.94x = 55,216,430,095.54
  5. Step 5: Solve for x
    x = 55,216,430,095.54/326,091.94
  6. Step 6: Final answer
    x = 169,327.80

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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.