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Finding the Fourth Proportional to 357,633.68, 536,450.78 and 91,394.46

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Solution

The fourth proportional to 357,633.68, 536,450.78 and 91,394.46 is: 137,091.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,633.68 : 536,450.78 = 91,394.46 : x
  2. Step 2: Convert to fraction form
    357,633.68/536,450.78 = 91,394.46/x
  3. Step 3: Cross multiply
    357,633.68x = 536,450.78 × 91,394.46
  4. Step 4: Simplify right side
    357,633.68x = 49,028,629,354.68
  5. Step 5: Solve for x
    x = 49,028,629,354.68/357,633.68
  6. Step 6: Final answer
    x = 137,091.76

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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.