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Finding the Fourth Proportional to 126,751.94, 190,062.30 and 67,571.72

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Solution

The fourth proportional to 126,751.94, 190,062.30 and 67,571.72 is: 101,322.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,751.94 : 190,062.30 = 67,571.72 : x
  2. Step 2: Convert to fraction form
    126,751.94/190,062.30 = 67,571.72/x
  3. Step 3: Cross multiply
    126,751.94x = 190,062.30 × 67,571.72
  4. Step 4: Simplify right side
    126,751.94x = 12,842,836,518.16
  5. Step 5: Solve for x
    x = 12,842,836,518.16/126,751.94
  6. Step 6: Final answer
    x = 101,322.60

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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.