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Finding the Fourth Proportional to 73,124.80, 109,600.80 and 31,004.80

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Solution

The fourth proportional to 73,124.80, 109,600.80 and 31,004.80 is: 46,470.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,124.80 : 109,600.80 = 31,004.80 : x
  2. Step 2: Convert to fraction form
    73,124.80/109,600.80 = 31,004.80/x
  3. Step 3: Cross multiply
    73,124.80x = 109,600.80 × 31,004.80
  4. Step 4: Simplify right side
    73,124.80x = 3,398,150,883.84
  5. Step 5: Solve for x
    x = 3,398,150,883.84/73,124.80
  6. Step 6: Final answer
    x = 46,470.57

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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.