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Finding the Fourth Proportional to 81,900.66, 113,022.50 and 46,091.28

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Solution

The fourth proportional to 81,900.66, 113,022.50 and 46,091.28 is: 63,605.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,900.66 : 113,022.50 = 46,091.28 : x
  2. Step 2: Convert to fraction form
    81,900.66/113,022.50 = 46,091.28/x
  3. Step 3: Cross multiply
    81,900.66x = 113,022.50 × 46,091.28
  4. Step 4: Simplify right side
    81,900.66x = 5,209,351,693.80
  5. Step 5: Solve for x
    x = 5,209,351,693.80/81,900.66
  6. Step 6: Final answer
    x = 63,605.74

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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.