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Finding the Fourth Proportional to 124,665.54, 171,951.12 and 84,361.56

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Solution

The fourth proportional to 124,665.54, 171,951.12 and 84,361.56 is: 116,359.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,665.54 : 171,951.12 = 84,361.56 : x
  2. Step 2: Convert to fraction form
    124,665.54/171,951.12 = 84,361.56/x
  3. Step 3: Cross multiply
    124,665.54x = 171,951.12 × 84,361.56
  4. Step 4: Simplify right side
    124,665.54x = 14,506,064,726.95
  5. Step 5: Solve for x
    x = 14,506,064,726.95/124,665.54
  6. Step 6: Final answer
    x = 116,359.86

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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.