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Finding the Fourth Proportional to 291,180.66, 436,789.83 and 91,509.39

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Solution

The fourth proportional to 291,180.66, 436,789.83 and 91,509.39 is: 137,270.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,180.66 : 436,789.83 = 91,509.39 : x
  2. Step 2: Convert to fraction form
    291,180.66/436,789.83 = 91,509.39/x
  3. Step 3: Cross multiply
    291,180.66x = 436,789.83 × 91,509.39
  4. Step 4: Simplify right side
    291,180.66x = 39,970,370,901.50
  5. Step 5: Solve for x
    x = 39,970,370,901.50/291,180.66
  6. Step 6: Final answer
    x = 137,270.01

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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.