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Finding the Fourth Proportional to 111,626.40, 154,045.44 and 61,325.44

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Solution

The fourth proportional to 111,626.40, 154,045.44 and 61,325.44 is: 84,629.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,626.40 : 154,045.44 = 61,325.44 : x
  2. Step 2: Convert to fraction form
    111,626.40/154,045.44 = 61,325.44/x
  3. Step 3: Cross multiply
    111,626.40x = 154,045.44 × 61,325.44
  4. Step 4: Simplify right side
    111,626.40x = 9,446,904,387.99
  5. Step 5: Solve for x
    x = 9,446,904,387.99/111,626.40
  6. Step 6: Final answer
    x = 84,629.66

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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.