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Finding the Fourth Proportional to 702,893.20, 1,054,080.60 and 347,789.20

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Solution

The fourth proportional to 702,893.20, 1,054,080.60 and 347,789.20 is: 521,555.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,893.20 : 1,054,080.60 = 347,789.20 : x
  2. Step 2: Convert to fraction form
    702,893.20/1,054,080.60 = 347,789.20/x
  3. Step 3: Cross multiply
    702,893.20x = 1,054,080.60 × 347,789.20
  4. Step 4: Simplify right side
    702,893.20x = 366,597,848,609.52
  5. Step 5: Solve for x
    x = 366,597,848,609.52/702,893.20
  6. Step 6: Final answer
    x = 521,555.55

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1.5x scale

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.