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Finding the Fourth Proportional to 79,698.81, 109,968.33 and 60,573.48

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Solution

The fourth proportional to 79,698.81, 109,968.33 and 60,573.48 is: 83,579.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,698.81 : 109,968.33 = 60,573.48 : x
  2. Step 2: Convert to fraction form
    79,698.81/109,968.33 = 60,573.48/x
  3. Step 3: Cross multiply
    79,698.81x = 109,968.33 × 60,573.48
  4. Step 4: Simplify right side
    79,698.81x = 6,661,164,437.89
  5. Step 5: Solve for x
    x = 6,661,164,437.89/79,698.81
  6. Step 6: Final answer
    x = 83,579.22

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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.