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Finding the Fourth Proportional to 519,871.80, 780,153.30 and 295,231.80

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Solution

The fourth proportional to 519,871.80, 780,153.30 and 295,231.80 is: 443,043.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,871.80 : 780,153.30 = 295,231.80 : x
  2. Step 2: Convert to fraction form
    519,871.80/780,153.30 = 295,231.80/x
  3. Step 3: Cross multiply
    519,871.80x = 780,153.30 × 295,231.80
  4. Step 4: Simplify right side
    519,871.80x = 230,326,063,034.94
  5. Step 5: Solve for x
    x = 230,326,063,034.94/519,871.80
  6. Step 6: Final answer
    x = 443,043.96

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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.