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Finding the Fourth Proportional to 114,778.80, 158,349.39 and 66,371.82

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Solution

The fourth proportional to 114,778.80, 158,349.39 and 66,371.82 is: 91,566.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,778.80 : 158,349.39 = 66,371.82 : x
  2. Step 2: Convert to fraction form
    114,778.80/158,349.39 = 66,371.82/x
  3. Step 3: Cross multiply
    114,778.80x = 158,349.39 × 66,371.82
  4. Step 4: Simplify right side
    114,778.80x = 10,509,937,210.19
  5. Step 5: Solve for x
    x = 10,509,937,210.19/114,778.80
  6. Step 6: Final answer
    x = 91,566.89

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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.