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Finding the Fourth Proportional to 111,933.44, 154,468 and 61,632

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Solution

The fourth proportional to 111,933.44, 154,468 and 61,632 is: 85,052.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,933.44 : 154,468 = 61,632 : x
  2. Step 2: Convert to fraction form
    111,933.44/154,468 = 61,632/x
  3. Step 3: Cross multiply
    111,933.44x = 154,468 × 61,632
  4. Step 4: Simplify right side
    111,933.44x = 9,520,171,776
  5. Step 5: Solve for x
    x = 9,520,171,776/111,933.44
  6. Step 6: Final answer
    x = 85,052.08

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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.