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Finding the Fourth Proportional to 58,795.94, 81,172.07 and 38,711.21

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Solution

The fourth proportional to 58,795.94, 81,172.07 and 38,711.21 is: 53,443.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,795.94 : 81,172.07 = 38,711.21 : x
  2. Step 2: Convert to fraction form
    58,795.94/81,172.07 = 38,711.21/x
  3. Step 3: Cross multiply
    58,795.94x = 81,172.07 × 38,711.21
  4. Step 4: Simplify right side
    58,795.94x = 3,142,268,448.49
  5. Step 5: Solve for x
    x = 3,142,268,448.49/58,795.94
  6. Step 6: Final answer
    x = 53,443.63

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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.