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Finding the Fourth Proportional to 3,554.66, 5,331.18 and 957.80

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Solution

The fourth proportional to 3,554.66, 5,331.18 and 957.80 is: 1,436.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,554.66 : 5,331.18 = 957.80 : x
  2. Step 2: Convert to fraction form
    3,554.66/5,331.18 = 957.80/x
  3. Step 3: Cross multiply
    3,554.66x = 5,331.18 × 957.80
  4. Step 4: Simplify right side
    3,554.66x = 5,106,204.20
  5. Step 5: Solve for x
    x = 5,106,204.20/3,554.66
  6. Step 6: Final answer
    x = 1,436.48

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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.