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Finding the Fourth Proportional to 3,562.95, 4,916.52 and 1,991.01

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Solution

The fourth proportional to 3,562.95, 4,916.52 and 1,991.01 is: 2,747.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,562.95 : 4,916.52 = 1,991.01 : x
  2. Step 2: Convert to fraction form
    3,562.95/4,916.52 = 1,991.01/x
  3. Step 3: Cross multiply
    3,562.95x = 4,916.52 × 1,991.01
  4. Step 4: Simplify right side
    3,562.95x = 9,788,840.49
  5. Step 5: Solve for x
    x = 9,788,840.49/3,562.95
  6. Step 6: Final answer
    x = 2,747.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.