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Finding the Fourth Proportional to 79,200.84, 118,669.48 and 55,778.08

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Solution

The fourth proportional to 79,200.84, 118,669.48 and 55,778.08 is: 83,574.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,200.84 : 118,669.48 = 55,778.08 : x
  2. Step 2: Convert to fraction form
    79,200.84/118,669.48 = 55,778.08/x
  3. Step 3: Cross multiply
    79,200.84x = 118,669.48 × 55,778.08
  4. Step 4: Simplify right side
    79,200.84x = 6,619,155,749.00
  5. Step 5: Solve for x
    x = 6,619,155,749.00/79,200.84
  6. Step 6: Final answer
    x = 83,574.31

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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.