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Finding the Fourth Proportional to 91,603.11, 137,403.59 and 51,625.11

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Solution

The fourth proportional to 91,603.11, 137,403.59 and 51,625.11 is: 77,437.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,603.11 : 137,403.59 = 51,625.11 : x
  2. Step 2: Convert to fraction form
    91,603.11/137,403.59 = 51,625.11/x
  3. Step 3: Cross multiply
    91,603.11x = 137,403.59 × 51,625.11
  4. Step 4: Simplify right side
    91,603.11x = 7,093,475,190.02
  5. Step 5: Solve for x
    x = 7,093,475,190.02/91,603.11
  6. Step 6: Final answer
    x = 77,437.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.