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Finding the Fourth Proportional to 2,090.79, 3,140.28 and 2,033.28

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Solution

The fourth proportional to 2,090.79, 3,140.28 and 2,033.28 is: 3,053.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.79 : 3,140.28 = 2,033.28 : x
  2. Step 2: Convert to fraction form
    2,090.79/3,140.28 = 2,033.28/x
  3. Step 3: Cross multiply
    2,090.79x = 3,140.28 × 2,033.28
  4. Step 4: Simplify right side
    2,090.79x = 6,385,068.52
  5. Step 5: Solve for x
    x = 6,385,068.52/2,090.79
  6. Step 6: Final answer
    x = 3,053.90

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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.