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Finding the Fourth Proportional to 217,958.58, 326,328.85 and 117,759.76

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Solution

The fourth proportional to 217,958.58, 326,328.85 and 117,759.76 is: 176,310.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,958.58 : 326,328.85 = 117,759.76 : x
  2. Step 2: Convert to fraction form
    217,958.58/326,328.85 = 117,759.76/x
  3. Step 3: Cross multiply
    217,958.58x = 326,328.85 × 117,759.76
  4. Step 4: Simplify right side
    217,958.58x = 38,428,406,388.45
  5. Step 5: Solve for x
    x = 38,428,406,388.45/217,958.58
  6. Step 6: Final answer
    x = 176,310.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.