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Finding the Fourth Proportional to 396,673.18, 547,273.81 and 253,515.81

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Solution

The fourth proportional to 396,673.18, 547,273.81 and 253,515.81 is: 349,765.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,673.18 : 547,273.81 = 253,515.81 : x
  2. Step 2: Convert to fraction form
    396,673.18/547,273.81 = 253,515.81/x
  3. Step 3: Cross multiply
    396,673.18x = 547,273.81 × 253,515.81
  4. Step 4: Simplify right side
    396,673.18x = 138,742,559,863.78
  5. Step 5: Solve for x
    x = 138,742,559,863.78/396,673.18
  6. Step 6: Final answer
    x = 349,765.42

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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.