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Finding the Fourth Proportional to 141,161.72, 194,797.05 and 77,500.58

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Solution

The fourth proportional to 141,161.72, 194,797.05 and 77,500.58 is: 106,947.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,161.72 : 194,797.05 = 77,500.58 : x
  2. Step 2: Convert to fraction form
    141,161.72/194,797.05 = 77,500.58/x
  3. Step 3: Cross multiply
    141,161.72x = 194,797.05 × 77,500.58
  4. Step 4: Simplify right side
    141,161.72x = 15,096,884,357.29
  5. Step 5: Solve for x
    x = 15,096,884,357.29/141,161.72
  6. Step 6: Final answer
    x = 106,947.44

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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.