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Finding the Fourth Proportional to 1,133.20, 1,698.33 and 474.33

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Solution

The fourth proportional to 1,133.20, 1,698.33 and 474.33 is: 710.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133.20 : 1,698.33 = 474.33 : x
  2. Step 2: Convert to fraction form
    1,133.20/1,698.33 = 474.33/x
  3. Step 3: Cross multiply
    1,133.20x = 1,698.33 × 474.33
  4. Step 4: Simplify right side
    1,133.20x = 805,568.87
  5. Step 5: Solve for x
    x = 805,568.87/1,133.20
  6. Step 6: Final answer
    x = 710.88

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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.