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Finding the Fourth Proportional to 91,361.58, 136,980.00 and 48,673.39

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Solution

The fourth proportional to 91,361.58, 136,980.00 and 48,673.39 is: 72,976.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,361.58 : 136,980.00 = 48,673.39 : x
  2. Step 2: Convert to fraction form
    91,361.58/136,980.00 = 48,673.39/x
  3. Step 3: Cross multiply
    91,361.58x = 136,980.00 × 48,673.39
  4. Step 4: Simplify right side
    91,361.58x = 6,667,281,315.95
  5. Step 5: Solve for x
    x = 6,667,281,315.95/91,361.58
  6. Step 6: Final answer
    x = 72,976.86

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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.