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Finding the Fourth Proportional to 382,115.40, 573,027.30 and 115,787.40

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Solution

The fourth proportional to 382,115.40, 573,027.30 and 115,787.40 is: 173,636.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,115.40 : 573,027.30 = 115,787.40 : x
  2. Step 2: Convert to fraction form
    382,115.40/573,027.30 = 115,787.40/x
  3. Step 3: Cross multiply
    382,115.40x = 573,027.30 × 115,787.40
  4. Step 4: Simplify right side
    382,115.40x = 66,349,341,196.02
  5. Step 5: Solve for x
    x = 66,349,341,196.02/382,115.40
  6. Step 6: Final answer
    x = 173,636.92

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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.