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Finding the Fourth Proportional to 2,014.52, 2,780.94 and 1,228.88

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Solution

The fourth proportional to 2,014.52, 2,780.94 and 1,228.88 is: 1,696.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,014.52 : 2,780.94 = 1,228.88 : x
  2. Step 2: Convert to fraction form
    2,014.52/2,780.94 = 1,228.88/x
  3. Step 3: Cross multiply
    2,014.52x = 2,780.94 × 1,228.88
  4. Step 4: Simplify right side
    2,014.52x = 3,417,441.55
  5. Step 5: Solve for x
    x = 3,417,441.55/2,014.52
  6. Step 6: Final answer
    x = 1,696.40

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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.