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Finding the Fourth Proportional to 396,484.02, 547,148.54 and 215,196.01

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Solution

The fourth proportional to 396,484.02, 547,148.54 and 215,196.01 is: 296,970.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,484.02 : 547,148.54 = 215,196.01 : x
  2. Step 2: Convert to fraction form
    396,484.02/547,148.54 = 215,196.01/x
  3. Step 3: Cross multiply
    396,484.02x = 547,148.54 × 215,196.01
  4. Step 4: Simplify right side
    396,484.02x = 117,744,183,907.25
  5. Step 5: Solve for x
    x = 117,744,183,907.25/396,484.02
  6. Step 6: Final answer
    x = 296,970.82

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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.