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Finding the Fourth Proportional to 321,868.70, 482,800.65 and 97,228.70

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Solution

The fourth proportional to 321,868.70, 482,800.65 and 97,228.70 is: 145,842.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,868.70 : 482,800.65 = 97,228.70 : x
  2. Step 2: Convert to fraction form
    321,868.70/482,800.65 = 97,228.70/x
  3. Step 3: Cross multiply
    321,868.70x = 482,800.65 × 97,228.70
  4. Step 4: Simplify right side
    321,868.70x = 46,942,079,558.66
  5. Step 5: Solve for x
    x = 46,942,079,558.66/321,868.70
  6. Step 6: Final answer
    x = 145,842.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.