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Finding the Fourth Proportional to 415,020.20, 622,603.20 and 148,935.20

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Solution

The fourth proportional to 415,020.20, 622,603.20 and 148,935.20 is: 223,428.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,020.20 : 622,603.20 = 148,935.20 : x
  2. Step 2: Convert to fraction form
    415,020.20/622,603.20 = 148,935.20/x
  3. Step 3: Cross multiply
    415,020.20x = 622,603.20 × 148,935.20
  4. Step 4: Simplify right side
    415,020.20x = 92,727,532,112.64
  5. Step 5: Solve for x
    x = 92,727,532,112.64/415,020.20
  6. Step 6: Final answer
    x = 223,428.96

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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.