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Finding the Fourth Proportional to 469,267.92, 647,245.71 and 308,064.15

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Solution

The fourth proportional to 469,267.92, 647,245.71 and 308,064.15 is: 424,902.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,267.92 : 647,245.71 = 308,064.15 : x
  2. Step 2: Convert to fraction form
    469,267.92/647,245.71 = 308,064.15/x
  3. Step 3: Cross multiply
    469,267.92x = 647,245.71 × 308,064.15
  4. Step 4: Simplify right side
    469,267.92x = 199,393,199,492.30
  5. Step 5: Solve for x
    x = 199,393,199,492.30/469,267.92
  6. Step 6: Final answer
    x = 424,902.69

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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.