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Finding the Fourth Proportional to 115,803.60, 173,721.60 and 49,243.20

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Solution

The fourth proportional to 115,803.60, 173,721.60 and 49,243.20 is: 73,871.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,803.60 : 173,721.60 = 49,243.20 : x
  2. Step 2: Convert to fraction form
    115,803.60/173,721.60 = 49,243.20/x
  3. Step 3: Cross multiply
    115,803.60x = 173,721.60 × 49,243.20
  4. Step 4: Simplify right side
    115,803.60x = 8,554,607,493.12
  5. Step 5: Solve for x
    x = 8,554,607,493.12/115,803.60
  6. Step 6: Final answer
    x = 73,871.69

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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.