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Finding the Fourth Proportional to 291,636.06, 437,515.11 and 123,156.78

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Solution

The fourth proportional to 291,636.06, 437,515.11 and 123,156.78 is: 184,760.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,636.06 : 437,515.11 = 123,156.78 : x
  2. Step 2: Convert to fraction form
    291,636.06/437,515.11 = 123,156.78/x
  3. Step 3: Cross multiply
    291,636.06x = 437,515.11 × 123,156.78
  4. Step 4: Simplify right side
    291,636.06x = 53,882,952,148.95
  5. Step 5: Solve for x
    x = 53,882,952,148.95/291,636.06
  6. Step 6: Final answer
    x = 184,760.94

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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.