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Finding the Fourth Proportional to 283,679.12, 391,449.15 and 168,934.94

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Solution

The fourth proportional to 283,679.12, 391,449.15 and 168,934.94 is: 233,113.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,679.12 : 391,449.15 = 168,934.94 : x
  2. Step 2: Convert to fraction form
    283,679.12/391,449.15 = 168,934.94/x
  3. Step 3: Cross multiply
    283,679.12x = 391,449.15 × 168,934.94
  4. Step 4: Simplify right side
    283,679.12x = 66,129,438,668.30
  5. Step 5: Solve for x
    x = 66,129,438,668.30/283,679.12
  6. Step 6: Final answer
    x = 233,113.52

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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.