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Finding the Fourth Proportional to 117,472.86, 162,110.21 and 66,484.67

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Solution

The fourth proportional to 117,472.86, 162,110.21 and 66,484.67 is: 91,747.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,472.86 : 162,110.21 = 66,484.67 : x
  2. Step 2: Convert to fraction form
    117,472.86/162,110.21 = 66,484.67/x
  3. Step 3: Cross multiply
    117,472.86x = 162,110.21 × 66,484.67
  4. Step 4: Simplify right side
    117,472.86x = 10,777,842,672.51
  5. Step 5: Solve for x
    x = 10,777,842,672.51/117,472.86
  6. Step 6: Final answer
    x = 91,747.51

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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.