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Finding the Fourth Proportional to 76,477.70, 114,716.55 and 60,731.30

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Solution

The fourth proportional to 76,477.70, 114,716.55 and 60,731.30 is: 91,096.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,477.70 : 114,716.55 = 60,731.30 : x
  2. Step 2: Convert to fraction form
    76,477.70/114,716.55 = 60,731.30/x
  3. Step 3: Cross multiply
    76,477.70x = 114,716.55 × 60,731.30
  4. Step 4: Simplify right side
    76,477.70x = 6,966,885,213.02
  5. Step 5: Solve for x
    x = 6,966,885,213.02/76,477.70
  6. Step 6: Final answer
    x = 91,096.95

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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.