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Finding the Fourth Proportional to 111,816, 154,306.08 and 61,513.92

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Solution

The fourth proportional to 111,816, 154,306.08 and 61,513.92 is: 84,889.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,816 : 154,306.08 = 61,513.92 : x
  2. Step 2: Convert to fraction form
    111,816/154,306.08 = 61,513.92/x
  3. Step 3: Cross multiply
    111,816x = 154,306.08 × 61,513.92
  4. Step 4: Simplify right side
    111,816x = 9,491,971,860.63
  5. Step 5: Solve for x
    x = 9,491,971,860.63/111,816
  6. Step 6: Final answer
    x = 84,889.21

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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.