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Finding the Fourth Proportional to 5,608.58, 7,739.80 and 3,090.63

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Solution

The fourth proportional to 5,608.58, 7,739.80 and 3,090.63 is: 4,265.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,608.58 : 7,739.80 = 3,090.63 : x
  2. Step 2: Convert to fraction form
    5,608.58/7,739.80 = 3,090.63/x
  3. Step 3: Cross multiply
    5,608.58x = 7,739.80 × 3,090.63
  4. Step 4: Simplify right side
    5,608.58x = 23,920,858.07
  5. Step 5: Solve for x
    x = 23,920,858.07/5,608.58
  6. Step 6: Final answer
    x = 4,265.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.