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Finding the Fourth Proportional to 326,057.96, 489,054.16 and 89,424.44

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Solution

The fourth proportional to 326,057.96, 489,054.16 and 89,424.44 is: 134,127.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,057.96 : 489,054.16 = 89,424.44 : x
  2. Step 2: Convert to fraction form
    326,057.96/489,054.16 = 89,424.44/x
  3. Step 3: Cross multiply
    326,057.96x = 489,054.16 × 89,424.44
  4. Step 4: Simplify right side
    326,057.96x = 43,733,394,387.67
  5. Step 5: Solve for x
    x = 43,733,394,387.67/326,057.96
  6. Step 6: Final answer
    x = 134,127.67

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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.