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Finding the Fourth Proportional to 6,611.70, 9,918.70 and 3,054.02

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Solution

The fourth proportional to 6,611.70, 9,918.70 and 3,054.02 is: 4,581.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.70 : 9,918.70 = 3,054.02 : x
  2. Step 2: Convert to fraction form
    6,611.70/9,918.70 = 3,054.02/x
  3. Step 3: Cross multiply
    6,611.70x = 9,918.70 × 3,054.02
  4. Step 4: Simplify right side
    6,611.70x = 30,291,908.17
  5. Step 5: Solve for x
    x = 30,291,908.17/6,611.70
  6. Step 6: Final answer
    x = 4,581.56

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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.