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Finding the Fourth Proportional to 351,245.20, 526,090.20 and 289,037.20

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Solution

The fourth proportional to 351,245.20, 526,090.20 and 289,037.20 is: 432,915.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,245.20 : 526,090.20 = 289,037.20 : x
  2. Step 2: Convert to fraction form
    351,245.20/526,090.20 = 289,037.20/x
  3. Step 3: Cross multiply
    351,245.20x = 526,090.20 × 289,037.20
  4. Step 4: Simplify right side
    351,245.20x = 152,059,638,355.44
  5. Step 5: Solve for x
    x = 152,059,638,355.44/351,245.20
  6. Step 6: Final answer
    x = 432,915.92

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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.