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Finding the Fourth Proportional to 357,630.82, 536,446.47 and 91,391.58

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Solution

The fourth proportional to 357,630.82, 536,446.47 and 91,391.58 is: 137,087.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,630.82 : 536,446.47 = 91,391.58 : x
  2. Step 2: Convert to fraction form
    357,630.82/536,446.47 = 91,391.58/x
  3. Step 3: Cross multiply
    357,630.82x = 536,446.47 × 91,391.58
  4. Step 4: Simplify right side
    357,630.82x = 49,026,690,821.44
  5. Step 5: Solve for x
    x = 49,026,690,821.44/357,630.82
  6. Step 6: Final answer
    x = 137,087.43

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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.