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Finding the Fourth Proportional to 111,862, 154,369.60 and 61,559.92

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Solution

The fourth proportional to 111,862, 154,369.60 and 61,559.92 is: 84,952.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,862 : 154,369.60 = 61,559.92 : x
  2. Step 2: Convert to fraction form
    111,862/154,369.60 = 61,559.92/x
  3. Step 3: Cross multiply
    111,862x = 154,369.60 × 61,559.92
  4. Step 4: Simplify right side
    111,862x = 9,502,980,226.43
  5. Step 5: Solve for x
    x = 9,502,980,226.43/111,862
  6. Step 6: Final answer
    x = 84,952.71

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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.