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Finding the Fourth Proportional to 415,025.70, 622,611.45 and 148,940.70

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Solution

The fourth proportional to 415,025.70, 622,611.45 and 148,940.70 is: 223,437.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,025.70 : 622,611.45 = 148,940.70 : x
  2. Step 2: Convert to fraction form
    415,025.70/622,611.45 = 148,940.70/x
  3. Step 3: Cross multiply
    415,025.70x = 622,611.45 × 148,940.70
  4. Step 4: Simplify right side
    415,025.70x = 92,732,185,191.02
  5. Step 5: Solve for x
    x = 92,732,185,191.02/415,025.70
  6. Step 6: Final answer
    x = 223,437.21

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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.