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Finding the Fourth Proportional to 111,937.44, 154,473.52 and 61,636

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Solution

The fourth proportional to 111,937.44, 154,473.52 and 61,636 is: 85,057.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,937.44 : 154,473.52 = 61,636 : x
  2. Step 2: Convert to fraction form
    111,937.44/154,473.52 = 61,636/x
  3. Step 3: Cross multiply
    111,937.44x = 154,473.52 × 61,636
  4. Step 4: Simplify right side
    111,937.44x = 9,521,129,878.72
  5. Step 5: Solve for x
    x = 9,521,129,878.72/111,937.44
  6. Step 6: Final answer
    x = 85,057.60

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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.