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Finding the Fourth Proportional to 116,771.88, 161,198.84 and 76,487.34

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Solution

The fourth proportional to 116,771.88, 161,198.84 and 76,487.34 is: 105,587.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,771.88 : 161,198.84 = 76,487.34 : x
  2. Step 2: Convert to fraction form
    116,771.88/161,198.84 = 76,487.34/x
  3. Step 3: Cross multiply
    116,771.88x = 161,198.84 × 76,487.34
  4. Step 4: Simplify right side
    116,771.88x = 12,329,670,482.69
  5. Step 5: Solve for x
    x = 12,329,670,482.69/116,771.88
  6. Step 6: Final answer
    x = 105,587.67

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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.