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Finding the Fourth Proportional to 357,936.12, 536,891.76 and 91,698.84

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Solution

The fourth proportional to 357,936.12, 536,891.76 and 91,698.84 is: 137,545.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,936.12 : 536,891.76 = 91,698.84 : x
  2. Step 2: Convert to fraction form
    357,936.12/536,891.76 = 91,698.84/x
  3. Step 3: Cross multiply
    357,936.12x = 536,891.76 × 91,698.84
  4. Step 4: Simplify right side
    357,936.12x = 49,232,351,597.56
  5. Step 5: Solve for x
    x = 49,232,351,597.56/357,936.12
  6. Step 6: Final answer
    x = 137,545.08

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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.