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Finding the Fourth Proportional to 396,796.16, 547,582.65 and 215,511.63

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Solution

The fourth proportional to 396,796.16, 547,582.65 and 215,511.63 is: 297,408.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,796.16 : 547,582.65 = 215,511.63 : x
  2. Step 2: Convert to fraction form
    396,796.16/547,582.65 = 215,511.63/x
  3. Step 3: Cross multiply
    396,796.16x = 547,582.65 × 215,511.63
  4. Step 4: Simplify right side
    396,796.16x = 118,010,429,461.22
  5. Step 5: Solve for x
    x = 118,010,429,461.22/396,796.16
  6. Step 6: Final answer
    x = 297,408.19

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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.