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Finding the Fourth Proportional to 325,877.80, 488,816.70 and 263,669.80

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Solution

The fourth proportional to 325,877.80, 488,816.70 and 263,669.80 is: 395,504.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,877.80 : 488,816.70 = 263,669.80 : x
  2. Step 2: Convert to fraction form
    325,877.80/488,816.70 = 263,669.80/x
  3. Step 3: Cross multiply
    325,877.80x = 488,816.70 × 263,669.80
  4. Step 4: Simplify right side
    325,877.80x = 128,886,201,525.66
  5. Step 5: Solve for x
    x = 128,886,201,525.66/325,877.80
  6. Step 6: Final answer
    x = 395,504.70

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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.