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Finding the Fourth Proportional to 383,560.60, 575,340.90 and 313,576.60

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Solution

The fourth proportional to 383,560.60, 575,340.90 and 313,576.60 is: 470,364.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,560.60 : 575,340.90 = 313,576.60 : x
  2. Step 2: Convert to fraction form
    383,560.60/575,340.90 = 313,576.60/x
  3. Step 3: Cross multiply
    383,560.60x = 575,340.90 × 313,576.60
  4. Step 4: Simplify right side
    383,560.60x = 180,413,443,262.94
  5. Step 5: Solve for x
    x = 180,413,443,262.94/383,560.60
  6. Step 6: Final answer
    x = 470,364.90

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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.