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Finding the Fourth Proportional to 79,661.46, 109,935.95 and 43,854.80

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Solution

The fourth proportional to 79,661.46, 109,935.95 and 43,854.80 is: 60,521.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,661.46 : 109,935.95 = 43,854.80 : x
  2. Step 2: Convert to fraction form
    79,661.46/109,935.95 = 43,854.80/x
  3. Step 3: Cross multiply
    79,661.46x = 109,935.95 × 43,854.80
  4. Step 4: Simplify right side
    79,661.46x = 4,821,219,100.06
  5. Step 5: Solve for x
    x = 4,821,219,100.06/79,661.46
  6. Step 6: Final answer
    x = 60,521.35

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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.