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Finding the Fourth Proportional to 161,561.76, 222,955.10 and 89,958.67

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Solution

The fourth proportional to 161,561.76, 222,955.10 and 89,958.67 is: 124,142.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,561.76 : 222,955.10 = 89,958.67 : x
  2. Step 2: Convert to fraction form
    161,561.76/222,955.10 = 89,958.67/x
  3. Step 3: Cross multiply
    161,561.76x = 222,955.10 × 89,958.67
  4. Step 4: Simplify right side
    161,561.76x = 20,056,743,595.88
  5. Step 5: Solve for x
    x = 20,056,743,595.88/161,561.76
  6. Step 6: Final answer
    x = 124,142.89

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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.