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Finding the Fourth Proportional to 312,922.49, 469,420.38 and 99,615.67

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Solution

The fourth proportional to 312,922.49, 469,420.38 and 99,615.67 is: 149,435.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,922.49 : 469,420.38 = 99,615.67 : x
  2. Step 2: Convert to fraction form
    312,922.49/469,420.38 = 99,615.67/x
  3. Step 3: Cross multiply
    312,922.49x = 469,420.38 × 99,615.67
  4. Step 4: Simplify right side
    312,922.49x = 46,761,624,491.80
  5. Step 5: Solve for x
    x = 46,761,624,491.80/312,922.49
  6. Step 6: Final answer
    x = 149,435.17

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