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Finding the Fourth Proportional to 1,953.81, 2,919.62 and 1,910.07

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Solution

The fourth proportional to 1,953.81, 2,919.62 and 1,910.07 is: 2,854.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.81 : 2,919.62 = 1,910.07 : x
  2. Step 2: Convert to fraction form
    1,953.81/2,919.62 = 1,910.07/x
  3. Step 3: Cross multiply
    1,953.81x = 2,919.62 × 1,910.07
  4. Step 4: Simplify right side
    1,953.81x = 5,576,683.35
  5. Step 5: Solve for x
    x = 5,576,683.35/1,953.81
  6. Step 6: Final answer
    x = 2,854.26

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.