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Finding the Fourth Proportional to 326,327.64, 489,491.46 and 115,973.88

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Solution

The fourth proportional to 326,327.64, 489,491.46 and 115,973.88 is: 173,960.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,327.64 : 489,491.46 = 115,973.88 : x
  2. Step 2: Convert to fraction form
    326,327.64/489,491.46 = 115,973.88/x
  3. Step 3: Cross multiply
    326,327.64x = 489,491.46 × 115,973.88
  4. Step 4: Simplify right side
    326,327.64x = 56,768,223,843.06
  5. Step 5: Solve for x
    x = 56,768,223,843.06/326,327.64
  6. Step 6: Final answer
    x = 173,960.82

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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.