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Finding the Fourth Proportional to 58,361.88, 86,987.61 and 55,040.07

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Solution

The fourth proportional to 58,361.88, 86,987.61 and 55,040.07 is: 82,036.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,361.88 : 86,987.61 = 55,040.07 : x
  2. Step 2: Convert to fraction form
    58,361.88/86,987.61 = 55,040.07/x
  3. Step 3: Cross multiply
    58,361.88x = 86,987.61 × 55,040.07
  4. Step 4: Simplify right side
    58,361.88x = 4,787,804,143.53
  5. Step 5: Solve for x
    x = 4,787,804,143.53/58,361.88
  6. Step 6: Final answer
    x = 82,036.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.