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Finding the Fourth Proportional to 111,655.70, 154,085.44 and 60,668.56

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Solution

The fourth proportional to 111,655.70, 154,085.44 and 60,668.56 is: 83,722.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,655.70 : 154,085.44 = 60,668.56 : x
  2. Step 2: Convert to fraction form
    111,655.70/154,085.44 = 60,668.56/x
  3. Step 3: Cross multiply
    111,655.70x = 154,085.44 × 60,668.56
  4. Step 4: Simplify right side
    111,655.70x = 9,348,141,761.77
  5. Step 5: Solve for x
    x = 9,348,141,761.77/111,655.70
  6. Step 6: Final answer
    x = 83,722.92

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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.