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Finding the Fourth Proportional to 357,620.06, 536,428.58 and 91,380.15

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Solution

The fourth proportional to 357,620.06, 536,428.58 and 91,380.15 is: 137,069.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,620.06 : 536,428.58 = 91,380.15 : x
  2. Step 2: Convert to fraction form
    357,620.06/536,428.58 = 91,380.15/x
  3. Step 3: Cross multiply
    357,620.06x = 536,428.58 × 91,380.15
  4. Step 4: Simplify right side
    357,620.06x = 49,018,923,647.79
  5. Step 5: Solve for x
    x = 49,018,923,647.79/357,620.06
  6. Step 6: Final answer
    x = 137,069.84

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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.