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Finding the Fourth Proportional to 326,451.58, 489,381.91 and 116,040.31

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Solution

The fourth proportional to 326,451.58, 489,381.91 and 116,040.31 is: 173,955.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,451.58 : 489,381.91 = 116,040.31 : x
  2. Step 2: Convert to fraction form
    326,451.58/489,381.91 = 116,040.31/x
  3. Step 3: Cross multiply
    326,451.58x = 489,381.91 × 116,040.31
  4. Step 4: Simplify right side
    326,451.58x = 56,788,028,544.79
  5. Step 5: Solve for x
    x = 56,788,028,544.79/326,451.58
  6. Step 6: Final answer
    x = 173,955.44

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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.