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Finding the Fourth Proportional to 114,011.54, 157,231.28 and 68,610.74

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Solution

The fourth proportional to 114,011.54, 157,231.28 and 68,610.74 is: 94,619.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,011.54 : 157,231.28 = 68,610.74 : x
  2. Step 2: Convert to fraction form
    114,011.54/157,231.28 = 68,610.74/x
  3. Step 3: Cross multiply
    114,011.54x = 157,231.28 × 68,610.74
  4. Step 4: Simplify right side
    114,011.54x = 10,787,754,471.95
  5. Step 5: Solve for x
    x = 10,787,754,471.95/114,011.54
  6. Step 6: Final answer
    x = 94,619.85

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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.