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Finding the Fourth Proportional to 289,930.88, 400,279.58 and 189,503.84

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Solution

The fourth proportional to 289,930.88, 400,279.58 and 189,503.84 is: 261,629.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,930.88 : 400,279.58 = 189,503.84 : x
  2. Step 2: Convert to fraction form
    289,930.88/400,279.58 = 189,503.84/x
  3. Step 3: Cross multiply
    289,930.88x = 400,279.58 × 189,503.84
  4. Step 4: Simplify right side
    289,930.88x = 75,854,514,534.67
  5. Step 5: Solve for x
    x = 75,854,514,534.67/289,930.88
  6. Step 6: Final answer
    x = 261,629.65

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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.