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Finding the Fourth Proportional to 140,694.88, 194,141.76 and 112,087.44

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Solution

The fourth proportional to 140,694.88, 194,141.76 and 112,087.44 is: 154,666.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,694.88 : 194,141.76 = 112,087.44 : x
  2. Step 2: Convert to fraction form
    140,694.88/194,141.76 = 112,087.44/x
  3. Step 3: Cross multiply
    140,694.88x = 194,141.76 × 112,087.44
  4. Step 4: Simplify right side
    140,694.88x = 21,760,852,875.49
  5. Step 5: Solve for x
    x = 21,760,852,875.49/140,694.88
  6. Step 6: Final answer
    x = 154,666.98

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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.