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Finding the Fourth Proportional to 111,641.64, 154,021.98 and 63,232.44

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Solution

The fourth proportional to 111,641.64, 154,021.98 and 63,232.44 is: 87,236.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,641.64 : 154,021.98 = 63,232.44 : x
  2. Step 2: Convert to fraction form
    111,641.64/154,021.98 = 63,232.44/x
  3. Step 3: Cross multiply
    111,641.64x = 154,021.98 × 63,232.44
  4. Step 4: Simplify right side
    111,641.64x = 9,739,185,609.03
  5. Step 5: Solve for x
    x = 9,739,185,609.03/111,641.64
  6. Step 6: Final answer
    x = 87,236.14

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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.