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Finding the Fourth Proportional to 117,761.31, 176,650.20 and 38,931.03

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Solution

The fourth proportional to 117,761.31, 176,650.20 and 38,931.03 is: 58,399.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,761.31 : 176,650.20 = 38,931.03 : x
  2. Step 2: Convert to fraction form
    117,761.31/176,650.20 = 38,931.03/x
  3. Step 3: Cross multiply
    117,761.31x = 176,650.20 × 38,931.03
  4. Step 4: Simplify right side
    117,761.31x = 6,877,174,235.71
  5. Step 5: Solve for x
    x = 6,877,174,235.71/117,761.31
  6. Step 6: Final answer
    x = 58,399.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.