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Finding the Fourth Proportional to 58,716.09, 81,028.09 and 31,858.59

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Solution

The fourth proportional to 58,716.09, 81,028.09 and 31,858.59 is: 43,964.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,716.09 : 81,028.09 = 31,858.59 : x
  2. Step 2: Convert to fraction form
    58,716.09/81,028.09 = 31,858.59/x
  3. Step 3: Cross multiply
    58,716.09x = 81,028.09 × 31,858.59
  4. Step 4: Simplify right side
    58,716.09x = 2,581,440,538.50
  5. Step 5: Solve for x
    x = 2,581,440,538.50/58,716.09
  6. Step 6: Final answer
    x = 43,964.79

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1.5x scale

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.