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Finding the Fourth Proportional to 384,373.25, 576,366.31 and 128,115.06

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Solution

The fourth proportional to 384,373.25, 576,366.31 and 128,115.06 is: 192,108.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,373.25 : 576,366.31 = 128,115.06 : x
  2. Step 2: Convert to fraction form
    384,373.25/576,366.31 = 128,115.06/x
  3. Step 3: Cross multiply
    384,373.25x = 576,366.31 × 128,115.06
  4. Step 4: Simplify right side
    384,373.25x = 73,841,203,747.05
  5. Step 5: Solve for x
    x = 73,841,203,747.05/384,373.25
  6. Step 6: Final answer
    x = 192,108.07

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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.