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Finding the Fourth Proportional to 125,060.33, 172,608.78 and 84,787.04

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Solution

The fourth proportional to 125,060.33, 172,608.78 and 84,787.04 is: 117,023.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,060.33 : 172,608.78 = 84,787.04 : x
  2. Step 2: Convert to fraction form
    125,060.33/172,608.78 = 84,787.04/x
  3. Step 3: Cross multiply
    125,060.33x = 172,608.78 × 84,787.04
  4. Step 4: Simplify right side
    125,060.33x = 14,634,986,671.17
  5. Step 5: Solve for x
    x = 14,634,986,671.17/125,060.33
  6. Step 6: Final answer
    x = 117,023.42

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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.