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Finding the Fourth Proportional to 91,114.54, 136,671.74 and 48,936.56

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Solution

The fourth proportional to 91,114.54, 136,671.74 and 48,936.56 is: 73,404.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,114.54 : 136,671.74 = 48,936.56 : x
  2. Step 2: Convert to fraction form
    91,114.54/136,671.74 = 48,936.56/x
  3. Step 3: Cross multiply
    91,114.54x = 136,671.74 × 48,936.56
  4. Step 4: Simplify right side
    91,114.54x = 6,688,244,060.29
  5. Step 5: Solve for x
    x = 6,688,244,060.29/91,114.54
  6. Step 6: Final answer
    x = 73,404.80

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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.