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Finding the Fourth Proportional to 326,118.26, 489,172.84 and 113,041.28

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Solution

The fourth proportional to 326,118.26, 489,172.84 and 113,041.28 is: 169,560.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,118.26 : 489,172.84 = 113,041.28 : x
  2. Step 2: Convert to fraction form
    326,118.26/489,172.84 = 113,041.28/x
  3. Step 3: Cross multiply
    326,118.26x = 489,172.84 × 113,041.28
  4. Step 4: Simplify right side
    326,118.26x = 55,296,723,974.84
  5. Step 5: Solve for x
    x = 55,296,723,974.84/326,118.26
  6. Step 6: Final answer
    x = 169,560.34

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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.