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Finding the Fourth Proportional to 111,953.88, 154,484.55 and 63,540.45

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Solution

The fourth proportional to 111,953.88, 154,484.55 and 63,540.45 is: 87,679.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,953.88 : 154,484.55 = 63,540.45 : x
  2. Step 2: Convert to fraction form
    111,953.88/154,484.55 = 63,540.45/x
  3. Step 3: Cross multiply
    111,953.88x = 154,484.55 × 63,540.45
  4. Step 4: Simplify right side
    111,953.88x = 9,816,017,825.05
  5. Step 5: Solve for x
    x = 9,816,017,825.05/111,953.88
  6. Step 6: Final answer
    x = 87,679.12

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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.