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Finding the Fourth Proportional to 89,200.80, 133,606.80 and 73,648.80

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Solution

The fourth proportional to 89,200.80, 133,606.80 and 73,648.80 is: 110,312.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,200.80 : 133,606.80 = 73,648.80 : x
  2. Step 2: Convert to fraction form
    89,200.80/133,606.80 = 73,648.80/x
  3. Step 3: Cross multiply
    89,200.80x = 133,606.80 × 73,648.80
  4. Step 4: Simplify right side
    89,200.80x = 9,839,980,491.84
  5. Step 5: Solve for x
    x = 9,839,980,491.84/89,200.80
  6. Step 6: Final answer
    x = 110,312.69

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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.