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Finding the Fourth Proportional to 1,194.95, 1,648.98 and 697.64

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Solution

The fourth proportional to 1,194.95, 1,648.98 and 697.64 is: 962.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,194.95 : 1,648.98 = 697.64 : x
  2. Step 2: Convert to fraction form
    1,194.95/1,648.98 = 697.64/x
  3. Step 3: Cross multiply
    1,194.95x = 1,648.98 × 697.64
  4. Step 4: Simplify right side
    1,194.95x = 1,150,392.76
  5. Step 5: Solve for x
    x = 1,150,392.76/1,194.95
  6. Step 6: Final answer
    x = 962.71

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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.