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Finding the Fourth Proportional to 362,705.80, 544,058.70 and 126,072.40

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Solution

The fourth proportional to 362,705.80, 544,058.70 and 126,072.40 is: 189,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,705.80 : 544,058.70 = 126,072.40 : x
  2. Step 2: Convert to fraction form
    362,705.80/544,058.70 = 126,072.40/x
  3. Step 3: Cross multiply
    362,705.80x = 544,058.70 × 126,072.40
  4. Step 4: Simplify right side
    362,705.80x = 68,590,786,049.88
  5. Step 5: Solve for x
    x = 68,590,786,049.88/362,705.80
  6. Step 6: Final answer
    x = 189,108.60

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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.