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Finding the Fourth Proportional to 111,776.49, 154,251.36 and 61,475.49

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Solution

The fourth proportional to 111,776.49, 154,251.36 and 61,475.49 is: 84,836.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,776.49 : 154,251.36 = 61,475.49 : x
  2. Step 2: Convert to fraction form
    111,776.49/154,251.36 = 61,475.49/x
  3. Step 3: Cross multiply
    111,776.49x = 154,251.36 × 61,475.49
  4. Step 4: Simplify right side
    111,776.49x = 9,482,677,939.17
  5. Step 5: Solve for x
    x = 9,482,677,939.17/111,776.49
  6. Step 6: Final answer
    x = 84,836.07

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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.