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Finding the Fourth Proportional to 58,737.84, 81,055.80 and 31,879.36

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Solution

The fourth proportional to 58,737.84, 81,055.80 and 31,879.36 is: 43,992.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,737.84 : 81,055.80 = 31,879.36 : x
  2. Step 2: Convert to fraction form
    58,737.84/81,055.80 = 31,879.36/x
  3. Step 3: Cross multiply
    58,737.84x = 81,055.80 × 31,879.36
  4. Step 4: Simplify right side
    58,737.84x = 2,584,007,028.29
  5. Step 5: Solve for x
    x = 2,584,007,028.29/58,737.84
  6. Step 6: Final answer
    x = 43,992.20

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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.