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Finding the Fourth Proportional to 141,157.76, 194,772.54 and 79,903.64

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Solution

The fourth proportional to 141,157.76, 194,772.54 and 79,903.64 is: 110,252.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,157.76 : 194,772.54 = 79,903.64 : x
  2. Step 2: Convert to fraction form
    141,157.76/194,772.54 = 79,903.64/x
  3. Step 3: Cross multiply
    141,157.76x = 194,772.54 × 79,903.64
  4. Step 4: Simplify right side
    141,157.76x = 15,563,034,918.05
  5. Step 5: Solve for x
    x = 15,563,034,918.05/141,157.76
  6. Step 6: Final answer
    x = 110,252.78

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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.