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Finding the Fourth Proportional to 58,739.81, 81,041.64 and 33,243.65

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Solution

The fourth proportional to 58,739.81, 81,041.64 and 33,243.65 is: 45,865.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,739.81 : 81,041.64 = 33,243.65 : x
  2. Step 2: Convert to fraction form
    58,739.81/81,041.64 = 33,243.65/x
  3. Step 3: Cross multiply
    58,739.81x = 81,041.64 × 33,243.65
  4. Step 4: Simplify right side
    58,739.81x = 2,694,119,510.38
  5. Step 5: Solve for x
    x = 2,694,119,510.38/58,739.81
  6. Step 6: Final answer
    x = 45,865.31

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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.