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Finding the Fourth Proportional to 3,554.51, 5,331.77 and 957.45

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Solution

The fourth proportional to 3,554.51, 5,331.77 and 957.45 is: 1,436.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,554.51 : 5,331.77 = 957.45 : x
  2. Step 2: Convert to fraction form
    3,554.51/5,331.77 = 957.45/x
  3. Step 3: Cross multiply
    3,554.51x = 5,331.77 × 957.45
  4. Step 4: Simplify right side
    3,554.51x = 5,104,882.38
  5. Step 5: Solve for x
    x = 5,104,882.38/3,554.51
  6. Step 6: Final answer
    x = 1,436.17

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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.