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Finding the Fourth Proportional to 58,721.87, 81,030.70 and 33,230.56

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Solution

The fourth proportional to 58,721.87, 81,030.70 and 33,230.56 is: 45,855.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,721.87 : 81,030.70 = 33,230.56 : x
  2. Step 2: Convert to fraction form
    58,721.87/81,030.70 = 33,230.56/x
  3. Step 3: Cross multiply
    58,721.87x = 81,030.70 × 33,230.56
  4. Step 4: Simplify right side
    58,721.87x = 2,692,695,538.19
  5. Step 5: Solve for x
    x = 2,692,695,538.19/58,721.87
  6. Step 6: Final answer
    x = 45,855.07

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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.