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Finding the Fourth Proportional to 117,472.88, 162,110.16 and 66,484.70

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Solution

The fourth proportional to 117,472.88, 162,110.16 and 66,484.70 is: 91,747.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,472.88 : 162,110.16 = 66,484.70 : x
  2. Step 2: Convert to fraction form
    117,472.88/162,110.16 = 66,484.70/x
  3. Step 3: Cross multiply
    117,472.88x = 162,110.16 × 66,484.70
  4. Step 4: Simplify right side
    117,472.88x = 10,777,845,151.91
  5. Step 5: Solve for x
    x = 10,777,845,151.91/117,472.88
  6. Step 6: Final answer
    x = 91,747.52

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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.