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Finding the Fourth Proportional to 621,636.58, 857,857.22 and 349,704.67

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Solution

The fourth proportional to 621,636.58, 857,857.22 and 349,704.67 is: 482,591.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,636.58 : 857,857.22 = 349,704.67 : x
  2. Step 2: Convert to fraction form
    621,636.58/857,857.22 = 349,704.67/x
  3. Step 3: Cross multiply
    621,636.58x = 857,857.22 × 349,704.67
  4. Step 4: Simplify right side
    621,636.58x = 299,996,674,278.69
  5. Step 5: Solve for x
    x = 299,996,674,278.69/621,636.58
  6. Step 6: Final answer
    x = 482,591.73

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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.