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Finding the Fourth Proportional to 144,281.15, 216,425.42 and 68,361.87

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Solution

The fourth proportional to 144,281.15, 216,425.42 and 68,361.87 is: 102,544.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,281.15 : 216,425.42 = 68,361.87 : x
  2. Step 2: Convert to fraction form
    144,281.15/216,425.42 = 68,361.87/x
  3. Step 3: Cross multiply
    144,281.15x = 216,425.42 × 68,361.87
  4. Step 4: Simplify right side
    144,281.15x = 14,795,247,152.88
  5. Step 5: Solve for x
    x = 14,795,247,152.88/144,281.15
  6. Step 6: Final answer
    x = 102,544.56

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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.