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Finding the Fourth Proportional to 5,359.64, 7,394.90 and 3,090.42

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Solution

The fourth proportional to 5,359.64, 7,394.90 and 3,090.42 is: 4,263.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,359.64 : 7,394.90 = 3,090.42 : x
  2. Step 2: Convert to fraction form
    5,359.64/7,394.90 = 3,090.42/x
  3. Step 3: Cross multiply
    5,359.64x = 7,394.90 × 3,090.42
  4. Step 4: Simplify right side
    5,359.64x = 22,853,331.41
  5. Step 5: Solve for x
    x = 22,853,331.41/5,359.64
  6. Step 6: Final answer
    x = 4,263.97

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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.