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Finding the Fourth Proportional to 112,059.84, 154,865.52 and 91,885.44

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Solution

The fourth proportional to 112,059.84, 154,865.52 and 91,885.44 is: 126,984.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,059.84 : 154,865.52 = 91,885.44 : x
  2. Step 2: Convert to fraction form
    112,059.84/154,865.52 = 91,885.44/x
  3. Step 3: Cross multiply
    112,059.84x = 154,865.52 × 91,885.44
  4. Step 4: Simplify right side
    112,059.84x = 14,229,886,446.03
  5. Step 5: Solve for x
    x = 14,229,886,446.03/112,059.84
  6. Step 6: Final answer
    x = 126,984.71

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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.