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Finding the Fourth Proportional to 355,787.75, 533,718.87 and 115,920.32

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Solution

The fourth proportional to 355,787.75, 533,718.87 and 115,920.32 is: 173,892.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,787.75 : 533,718.87 = 115,920.32 : x
  2. Step 2: Convert to fraction form
    355,787.75/533,718.87 = 115,920.32/x
  3. Step 3: Cross multiply
    355,787.75x = 533,718.87 × 115,920.32
  4. Step 4: Simplify right side
    355,787.75x = 61,868,859,531.84
  5. Step 5: Solve for x
    x = 61,868,859,531.84/355,787.75
  6. Step 6: Final answer
    x = 173,892.61

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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.