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Finding the Fourth Proportional to 5,608.68, 7,740.17 and 3,090.98

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Solution

The fourth proportional to 5,608.68, 7,740.17 and 3,090.98 is: 4,265.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,608.68 : 7,740.17 = 3,090.98 : x
  2. Step 2: Convert to fraction form
    5,608.68/7,740.17 = 3,090.98/x
  3. Step 3: Cross multiply
    5,608.68x = 7,740.17 × 3,090.98
  4. Step 4: Simplify right side
    5,608.68x = 23,924,682.61
  5. Step 5: Solve for x
    x = 23,924,682.61/5,608.68
  6. Step 6: Final answer
    x = 4,265.66

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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.