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Finding the Fourth Proportional to 111,559.93, 153,895.66 and 71,231.29

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Solution

The fourth proportional to 111,559.93, 153,895.66 and 71,231.29 is: 98,262.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,559.93 : 153,895.66 = 71,231.29 : x
  2. Step 2: Convert to fraction form
    111,559.93/153,895.66 = 71,231.29/x
  3. Step 3: Cross multiply
    111,559.93x = 153,895.66 × 71,231.29
  4. Step 4: Simplify right side
    111,559.93x = 10,962,186,387.20
  5. Step 5: Solve for x
    x = 10,962,186,387.20/111,559.93
  6. Step 6: Final answer
    x = 98,262.76

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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.