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Finding the Fourth Proportional to 447,401.70, 617,424.92 and 253,822.49

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Solution

The fourth proportional to 447,401.70, 617,424.92 and 253,822.49 is: 350,281.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,401.70 : 617,424.92 = 253,822.49 : x
  2. Step 2: Convert to fraction form
    447,401.70/617,424.92 = 253,822.49/x
  3. Step 3: Cross multiply
    447,401.70x = 617,424.92 × 253,822.49
  4. Step 4: Simplify right side
    447,401.70x = 156,716,326,226.21
  5. Step 5: Solve for x
    x = 156,716,326,226.21/447,401.70
  6. Step 6: Final answer
    x = 350,281.03

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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.