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Finding the Fourth Proportional to 126,572.94, 174,704.19 and 78,797.93

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Solution

The fourth proportional to 126,572.94, 174,704.19 and 78,797.93 is: 108,762.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,572.94 : 174,704.19 = 78,797.93 : x
  2. Step 2: Convert to fraction form
    126,572.94/174,704.19 = 78,797.93/x
  3. Step 3: Cross multiply
    126,572.94x = 174,704.19 × 78,797.93
  4. Step 4: Simplify right side
    126,572.94x = 13,766,327,660.81
  5. Step 5: Solve for x
    x = 13,766,327,660.81/126,572.94
  6. Step 6: Final answer
    x = 108,762.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.