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Finding the Fourth Proportional to 79,077.92, 118,485.66 and 55,655.15

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Solution

The fourth proportional to 79,077.92, 118,485.66 and 55,655.15 is: 83,390.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,077.92 : 118,485.66 = 55,655.15 : x
  2. Step 2: Convert to fraction form
    79,077.92/118,485.66 = 55,655.15/x
  3. Step 3: Cross multiply
    79,077.92x = 118,485.66 × 55,655.15
  4. Step 4: Simplify right side
    79,077.92x = 6,594,337,476.36
  5. Step 5: Solve for x
    x = 6,594,337,476.36/79,077.92
  6. Step 6: Final answer
    x = 83,390.37

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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.