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Finding the Fourth Proportional to 2,014.18, 3,020.96 and 553

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Solution

The fourth proportional to 2,014.18, 3,020.96 and 553 is: 829.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,014.18 : 3,020.96 = 553 : x
  2. Step 2: Convert to fraction form
    2,014.18/3,020.96 = 553/x
  3. Step 3: Cross multiply
    2,014.18x = 3,020.96 × 553
  4. Step 4: Simplify right side
    2,014.18x = 1,670,590.88
  5. Step 5: Solve for x
    x = 1,670,590.88/2,014.18
  6. Step 6: Final answer
    x = 829.41

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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.