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Finding the Fourth Proportional to 208,483.20, 312,725.06 and 50,710.56

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Solution

The fourth proportional to 208,483.20, 312,725.06 and 50,710.56 is: 76,065.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,483.20 : 312,725.06 = 50,710.56 : x
  2. Step 2: Convert to fraction form
    208,483.20/312,725.06 = 50,710.56/x
  3. Step 3: Cross multiply
    208,483.20x = 312,725.06 × 50,710.56
  4. Step 4: Simplify right side
    208,483.20x = 15,858,462,918.63
  5. Step 5: Solve for x
    x = 15,858,462,918.63/208,483.20
  6. Step 6: Final answer
    x = 76,065.90

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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.