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Finding the Fourth Proportional to 3,574.76, 5,361.68 and 977.48

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Solution

The fourth proportional to 3,574.76, 5,361.68 and 977.48 is: 1,466.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,574.76 : 5,361.68 = 977.48 : x
  2. Step 2: Convert to fraction form
    3,574.76/5,361.68 = 977.48/x
  3. Step 3: Cross multiply
    3,574.76x = 5,361.68 × 977.48
  4. Step 4: Simplify right side
    3,574.76x = 5,240,934.97
  5. Step 5: Solve for x
    x = 5,240,934.97/3,574.76
  6. Step 6: Final answer
    x = 1,466.09

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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.