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Finding the Fourth Proportional to 115,889.78, 173,907.79 and 49,329.80

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Solution

The fourth proportional to 115,889.78, 173,907.79 and 49,329.80 is: 74,025.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,889.78 : 173,907.79 = 49,329.80 : x
  2. Step 2: Convert to fraction form
    115,889.78/173,907.79 = 49,329.80/x
  3. Step 3: Cross multiply
    115,889.78x = 173,907.79 × 49,329.80
  4. Step 4: Simplify right side
    115,889.78x = 8,578,835,752.93
  5. Step 5: Solve for x
    x = 8,578,835,752.93/115,889.78
  6. Step 6: Final answer
    x = 74,025.82

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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.