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Finding the Fourth Proportional to 396,671.24, 547,271.13 and 253,513.87

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Solution

The fourth proportional to 396,671.24, 547,271.13 and 253,513.87 is: 349,762.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,671.24 : 547,271.13 = 253,513.87 : x
  2. Step 2: Convert to fraction form
    396,671.24/547,271.13 = 253,513.87/x
  3. Step 3: Cross multiply
    396,671.24x = 547,271.13 × 253,513.87
  4. Step 4: Simplify right side
    396,671.24x = 138,740,821,688.07
  5. Step 5: Solve for x
    x = 138,740,821,688.07/396,671.24
  6. Step 6: Final answer
    x = 349,762.74

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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.