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Finding the Fourth Proportional to 141,165.80, 194,809.14 and 77,507.68

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Solution

The fourth proportional to 141,165.80, 194,809.14 and 77,507.68 is: 106,960.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,165.80 : 194,809.14 = 77,507.68 : x
  2. Step 2: Convert to fraction form
    141,165.80/194,809.14 = 77,507.68/x
  3. Step 3: Cross multiply
    141,165.80x = 194,809.14 × 77,507.68
  4. Step 4: Simplify right side
    141,165.80x = 15,099,204,484.20
  5. Step 5: Solve for x
    x = 15,099,204,484.20/141,165.80
  6. Step 6: Final answer
    x = 106,960.78

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1.5x scale

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.