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Finding the Fourth Proportional to 125,193.95, 172,827.52 and 71,468.58

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Solution

The fourth proportional to 125,193.95, 172,827.52 and 71,468.58 is: 98,660.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,193.95 : 172,827.52 = 71,468.58 : x
  2. Step 2: Convert to fraction form
    125,193.95/172,827.52 = 71,468.58/x
  3. Step 3: Cross multiply
    125,193.95x = 172,827.52 × 71,468.58
  4. Step 4: Simplify right side
    125,193.95x = 12,351,737,908.75
  5. Step 5: Solve for x
    x = 12,351,737,908.75/125,193.95
  6. Step 6: Final answer
    x = 98,660.82

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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.