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Finding the Fourth Proportional to 449,458.76, 619,197.66 and 313,245.11

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Solution

The fourth proportional to 449,458.76, 619,197.66 and 313,245.11 is: 431,542.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,458.76 : 619,197.66 = 313,245.11 : x
  2. Step 2: Convert to fraction form
    449,458.76/619,197.66 = 313,245.11/x
  3. Step 3: Cross multiply
    449,458.76x = 619,197.66 × 313,245.11
  4. Step 4: Simplify right side
    449,458.76x = 193,960,636,022.45
  5. Step 5: Solve for x
    x = 193,960,636,022.45/449,458.76
  6. Step 6: Final answer
    x = 431,542.68

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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.