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Finding the Fourth Proportional to 449,445.11, 620,252.48 and 258,458.49

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Solution

The fourth proportional to 449,445.11, 620,252.48 and 258,458.49 is: 356,683.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,445.11 : 620,252.48 = 258,458.49 : x
  2. Step 2: Convert to fraction form
    449,445.11/620,252.48 = 258,458.49/x
  3. Step 3: Cross multiply
    449,445.11x = 620,252.48 × 258,458.49
  4. Step 4: Simplify right side
    449,445.11x = 160,309,520,045.70
  5. Step 5: Solve for x
    x = 160,309,520,045.70/449,445.11
  6. Step 6: Final answer
    x = 356,683.20

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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.