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Finding the Fourth Proportional to 1,968.60, 2,953.46 and 797.88

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Solution

The fourth proportional to 1,968.60, 2,953.46 and 797.88 is: 1,197.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.60 : 2,953.46 = 797.88 : x
  2. Step 2: Convert to fraction form
    1,968.60/2,953.46 = 797.88/x
  3. Step 3: Cross multiply
    1,968.60x = 2,953.46 × 797.88
  4. Step 4: Simplify right side
    1,968.60x = 2,356,506.66
  5. Step 5: Solve for x
    x = 2,356,506.66/1,968.60
  6. Step 6: Final answer
    x = 1,197.05

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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.