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Finding the Fourth Proportional to 353,512.80, 529,977.60 and 187,300.80

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Solution

The fourth proportional to 353,512.80, 529,977.60 and 187,300.80 is: 280,796.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,512.80 : 529,977.60 = 187,300.80 : x
  2. Step 2: Convert to fraction form
    353,512.80/529,977.60 = 187,300.80/x
  3. Step 3: Cross multiply
    353,512.80x = 529,977.60 × 187,300.80
  4. Step 4: Simplify right side
    353,512.80x = 99,265,228,462.08
  5. Step 5: Solve for x
    x = 99,265,228,462.08/353,512.80
  6. Step 6: Final answer
    x = 280,796.70

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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.