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Finding the Fourth Proportional to 111,769.94, 154,241.82 and 63,381.08

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Solution

The fourth proportional to 111,769.94, 154,241.82 and 63,381.08 is: 87,465.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,769.94 : 154,241.82 = 63,381.08 : x
  2. Step 2: Convert to fraction form
    111,769.94/154,241.82 = 63,381.08/x
  3. Step 3: Cross multiply
    111,769.94x = 154,241.82 × 63,381.08
  4. Step 4: Simplify right side
    111,769.94x = 9,776,013,518.37
  5. Step 5: Solve for x
    x = 9,776,013,518.37/111,769.94
  6. Step 6: Final answer
    x = 87,465.50

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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.