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Finding the Fourth Proportional to 66,222.70, 99,333.93 and 54,488.46

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Solution

The fourth proportional to 66,222.70, 99,333.93 and 54,488.46 is: 81,732.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,222.70 : 99,333.93 = 54,488.46 : x
  2. Step 2: Convert to fraction form
    66,222.70/99,333.93 = 54,488.46/x
  3. Step 3: Cross multiply
    66,222.70x = 99,333.93 × 54,488.46
  4. Step 4: Simplify right side
    66,222.70x = 5,412,552,952.59
  5. Step 5: Solve for x
    x = 5,412,552,952.59/66,222.70
  6. Step 6: Final answer
    x = 81,732.59

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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.