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Finding the Fourth Proportional to 133,087.63, 183,621.13 and 85,257.67

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Solution

The fourth proportional to 133,087.63, 183,621.13 and 85,257.67 is: 117,630.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,087.63 : 183,621.13 = 85,257.67 : x
  2. Step 2: Convert to fraction form
    133,087.63/183,621.13 = 85,257.67/x
  3. Step 3: Cross multiply
    133,087.63x = 183,621.13 × 85,257.67
  4. Step 4: Simplify right side
    133,087.63x = 15,655,109,706.57
  5. Step 5: Solve for x
    x = 15,655,109,706.57/133,087.63
  6. Step 6: Final answer
    x = 117,630.09

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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.