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Finding the Fourth Proportional to 548,991.18, 757,611.60 and 307,296.12

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Solution

The fourth proportional to 548,991.18, 757,611.60 and 307,296.12 is: 424,070.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,991.18 : 757,611.60 = 307,296.12 : x
  2. Step 2: Convert to fraction form
    548,991.18/757,611.60 = 307,296.12/x
  3. Step 3: Cross multiply
    548,991.18x = 757,611.60 × 307,296.12
  4. Step 4: Simplify right side
    548,991.18x = 232,811,105,146.99
  5. Step 5: Solve for x
    x = 232,811,105,146.99/548,991.18
  6. Step 6: Final answer
    x = 424,070.76

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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.