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Finding the Fourth Proportional to 1,184.76, 1,777.95 and 698.49

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Solution

The fourth proportional to 1,184.76, 1,777.95 and 698.49 is: 1,048.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,184.76 : 1,777.95 = 698.49 : x
  2. Step 2: Convert to fraction form
    1,184.76/1,777.95 = 698.49/x
  3. Step 3: Cross multiply
    1,184.76x = 1,777.95 × 698.49
  4. Step 4: Simplify right side
    1,184.76x = 1,241,880.30
  5. Step 5: Solve for x
    x = 1,241,880.30/1,184.76
  6. Step 6: Final answer
    x = 1,048.21

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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.