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Finding the Fourth Proportional to 140,908.80, 194,520.62 and 87,228.88

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Solution

The fourth proportional to 140,908.80, 194,520.62 and 87,228.88 is: 120,417.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,908.80 : 194,520.62 = 87,228.88 : x
  2. Step 2: Convert to fraction form
    140,908.80/194,520.62 = 87,228.88/x
  3. Step 3: Cross multiply
    140,908.80x = 194,520.62 × 87,228.88
  4. Step 4: Simplify right side
    140,908.80x = 16,967,815,819.51
  5. Step 5: Solve for x
    x = 16,967,815,819.51/140,908.80
  6. Step 6: Final answer
    x = 120,417.01

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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.