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Finding the Fourth Proportional to 2,016.70, 3,024.28 and 783.96

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Solution

The fourth proportional to 2,016.70, 3,024.28 and 783.96 is: 1,175.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,016.70 : 3,024.28 = 783.96 : x
  2. Step 2: Convert to fraction form
    2,016.70/3,024.28 = 783.96/x
  3. Step 3: Cross multiply
    2,016.70x = 3,024.28 × 783.96
  4. Step 4: Simplify right side
    2,016.70x = 2,370,904.19
  5. Step 5: Solve for x
    x = 2,370,904.19/2,016.70
  6. Step 6: Final answer
    x = 1,175.64

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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.