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Finding the Fourth Proportional to 449,453.61, 619,393.23 and 321,907.77

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Solution

The fourth proportional to 449,453.61, 619,393.23 and 321,907.77 is: 443,621.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,453.61 : 619,393.23 = 321,907.77 : x
  2. Step 2: Convert to fraction form
    449,453.61/619,393.23 = 321,907.77/x
  3. Step 3: Cross multiply
    449,453.61x = 619,393.23 × 321,907.77
  4. Step 4: Simplify right side
    449,453.61x = 199,387,493,422.40
  5. Step 5: Solve for x
    x = 199,387,493,422.40/449,453.61
  6. Step 6: Final answer
    x = 443,621.96

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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.