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Finding the Fourth Proportional to 1,165.04, 1,748 and 617.24

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Solution

The fourth proportional to 1,165.04, 1,748 and 617.24 is: 926.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.04 : 1,748 = 617.24 : x
  2. Step 2: Convert to fraction form
    1,165.04/1,748 = 617.24/x
  3. Step 3: Cross multiply
    1,165.04x = 1,748 × 617.24
  4. Step 4: Simplify right side
    1,165.04x = 1,078,935.52
  5. Step 5: Solve for x
    x = 1,078,935.52/1,165.04
  6. Step 6: Final answer
    x = 926.09

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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.