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Finding the Fourth Proportional to 211,605.56, 291,652 and 201,640.12

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Solution

The fourth proportional to 211,605.56, 291,652 and 201,640.12 is: 277,916.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,605.56 : 291,652 = 201,640.12 : x
  2. Step 2: Convert to fraction form
    211,605.56/291,652 = 201,640.12/x
  3. Step 3: Cross multiply
    211,605.56x = 291,652 × 201,640.12
  4. Step 4: Simplify right side
    211,605.56x = 58,808,744,278.24
  5. Step 5: Solve for x
    x = 58,808,744,278.24/211,605.56
  6. Step 6: Final answer
    x = 277,916.82

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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.