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Finding the Fourth Proportional to 111,158.89, 153,399.27 and 60,857.89

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Solution

The fourth proportional to 111,158.89, 153,399.27 and 60,857.89 is: 83,983.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,158.89 : 153,399.27 = 60,857.89 : x
  2. Step 2: Convert to fraction form
    111,158.89/153,399.27 = 60,857.89/x
  3. Step 3: Cross multiply
    111,158.89x = 153,399.27 × 60,857.89
  4. Step 4: Simplify right side
    111,158.89x = 9,335,555,899.74
  5. Step 5: Solve for x
    x = 9,335,555,899.74/111,158.89
  6. Step 6: Final answer
    x = 83,983.89

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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.