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Finding the Fourth Proportional to 326,243.70, 489,225.67 and 176,443.31

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Solution

The fourth proportional to 326,243.70, 489,225.67 and 176,443.31 is: 264,589.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,243.70 : 489,225.67 = 176,443.31 : x
  2. Step 2: Convert to fraction form
    326,243.70/489,225.67 = 176,443.31/x
  3. Step 3: Cross multiply
    326,243.70x = 489,225.67 × 176,443.31
  4. Step 4: Simplify right side
    326,243.70x = 86,320,598,326.22
  5. Step 5: Solve for x
    x = 86,320,598,326.22/326,243.70
  6. Step 6: Final answer
    x = 264,589.32

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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.