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Finding the Fourth Proportional to 4,435.64, 6,653.06 and 1,661

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Solution

The fourth proportional to 4,435.64, 6,653.06 and 1,661 is: 2,491.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,435.64 : 6,653.06 = 1,661 : x
  2. Step 2: Convert to fraction form
    4,435.64/6,653.06 = 1,661/x
  3. Step 3: Cross multiply
    4,435.64x = 6,653.06 × 1,661
  4. Step 4: Simplify right side
    4,435.64x = 11,050,732.66
  5. Step 5: Solve for x
    x = 11,050,732.66/4,435.64
  6. Step 6: Final answer
    x = 2,491.35

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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.