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Finding the Fourth Proportional to 291,485.43, 437,186.62 and 91,800.62

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Solution

The fourth proportional to 291,485.43, 437,186.62 and 91,800.62 is: 137,687.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,485.43 : 437,186.62 = 91,800.62 : x
  2. Step 2: Convert to fraction form
    291,485.43/437,186.62 = 91,800.62/x
  3. Step 3: Cross multiply
    291,485.43x = 437,186.62 × 91,800.62
  4. Step 4: Simplify right side
    291,485.43x = 40,134,002,312.70
  5. Step 5: Solve for x
    x = 40,134,002,312.70/291,485.43
  6. Step 6: Final answer
    x = 137,687.85

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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.