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Finding the Fourth Proportional to 7,394.81, 11,086.74 and 3,494.66

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Solution

The fourth proportional to 7,394.81, 11,086.74 and 3,494.66 is: 5,239.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,394.81 : 11,086.74 = 3,494.66 : x
  2. Step 2: Convert to fraction form
    7,394.81/11,086.74 = 3,494.66/x
  3. Step 3: Cross multiply
    7,394.81x = 11,086.74 × 3,494.66
  4. Step 4: Simplify right side
    7,394.81x = 38,744,386.81
  5. Step 5: Solve for x
    x = 38,744,386.81/7,394.81
  6. Step 6: Final answer
    x = 5,239.40

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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.