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Finding the Fourth Proportional to 5,709.85, 7,880.16 and 3,351.94

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Solution

The fourth proportional to 5,709.85, 7,880.16 and 3,351.94 is: 4,626.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,709.85 : 7,880.16 = 3,351.94 : x
  2. Step 2: Convert to fraction form
    5,709.85/7,880.16 = 3,351.94/x
  3. Step 3: Cross multiply
    5,709.85x = 7,880.16 × 3,351.94
  4. Step 4: Simplify right side
    5,709.85x = 26,413,823.51
  5. Step 5: Solve for x
    x = 26,413,823.51/5,709.85
  6. Step 6: Final answer
    x = 4,626.01

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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.