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Finding the Fourth Proportional to 326,072.80, 455,568.80 and 326,072.80

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Solution

The fourth proportional to 326,072.80, 455,568.80 and 326,072.80 is: 455,568.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,072.80 : 455,568.80 = 326,072.80 : x
  2. Step 2: Convert to fraction form
    326,072.80/455,568.80 = 326,072.80/x
  3. Step 3: Cross multiply
    326,072.80x = 455,568.80 × 326,072.80
  4. Step 4: Simplify right side
    326,072.80x = 148,548,594,208.64
  5. Step 5: Solve for x
    x = 148,548,594,208.64/326,072.80
  6. Step 6: Final answer
    x = 455,568.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.