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Finding the Fourth Proportional to 355,858.20, 533,009.70 and 276,348.60

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Solution

The fourth proportional to 355,858.20, 533,009.70 and 276,348.60 is: 413,919.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,858.20 : 533,009.70 = 276,348.60 : x
  2. Step 2: Convert to fraction form
    355,858.20/533,009.70 = 276,348.60/x
  3. Step 3: Cross multiply
    355,858.20x = 533,009.70 × 276,348.60
  4. Step 4: Simplify right side
    355,858.20x = 147,296,484,381.42
  5. Step 5: Solve for x
    x = 147,296,484,381.42/355,858.20
  6. Step 6: Final answer
    x = 413,919.04

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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.