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Finding the Fourth Proportional to 117,412.88, 162,029.77 and 66,424.59

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Solution

The fourth proportional to 117,412.88, 162,029.77 and 66,424.59 is: 91,665.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,412.88 : 162,029.77 = 66,424.59 : x
  2. Step 2: Convert to fraction form
    117,412.88/162,029.77 = 66,424.59/x
  3. Step 3: Cross multiply
    117,412.88x = 162,029.77 × 66,424.59
  4. Step 4: Simplify right side
    117,412.88x = 10,762,760,873.98
  5. Step 5: Solve for x
    x = 10,762,760,873.98/117,412.88
  6. Step 6: Final answer
    x = 91,665.93

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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.