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Finding the Fourth Proportional to 91,692.54, 137,505.99 and 49,603.74

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Solution

The fourth proportional to 91,692.54, 137,505.99 and 49,603.74 is: 74,387.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,692.54 : 137,505.99 = 49,603.74 : x
  2. Step 2: Convert to fraction form
    91,692.54/137,505.99 = 49,603.74/x
  3. Step 3: Cross multiply
    91,692.54x = 137,505.99 × 49,603.74
  4. Step 4: Simplify right side
    91,692.54x = 6,820,811,376.40
  5. Step 5: Solve for x
    x = 6,820,811,376.40/91,692.54
  6. Step 6: Final answer
    x = 74,387.86

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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.