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Finding the Fourth Proportional to 396,330.57, 547,005.96 and 235,275.03

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Solution

The fourth proportional to 396,330.57, 547,005.96 and 235,275.03 is: 324,720.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,330.57 : 547,005.96 = 235,275.03 : x
  2. Step 2: Convert to fraction form
    396,330.57/547,005.96 = 235,275.03/x
  3. Step 3: Cross multiply
    396,330.57x = 547,005.96 × 235,275.03
  4. Step 4: Simplify right side
    396,330.57x = 128,696,843,649.18
  5. Step 5: Solve for x
    x = 128,696,843,649.18/396,330.57
  6. Step 6: Final answer
    x = 324,720.96

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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.