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Finding the Fourth Proportional to 99,604.19, 137,453.78 and 54,892.19

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Solution

The fourth proportional to 99,604.19, 137,453.78 and 54,892.19 is: 75,751.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,604.19 : 137,453.78 = 54,892.19 : x
  2. Step 2: Convert to fraction form
    99,604.19/137,453.78 = 54,892.19/x
  3. Step 3: Cross multiply
    99,604.19x = 137,453.78 × 54,892.19
  4. Step 4: Simplify right side
    99,604.19x = 7,545,139,007.98
  5. Step 5: Solve for x
    x = 7,545,139,007.98/99,604.19
  6. Step 6: Final answer
    x = 75,751.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.