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Finding the Fourth Proportional to 125,812.80, 173,601.90 and 72,087.48

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Solution

The fourth proportional to 125,812.80, 173,601.90 and 72,087.48 is: 99,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,812.80 : 173,601.90 = 72,087.48 : x
  2. Step 2: Convert to fraction form
    125,812.80/173,601.90 = 72,087.48/x
  3. Step 3: Cross multiply
    125,812.80x = 173,601.90 × 72,087.48
  4. Step 4: Simplify right side
    125,812.80x = 12,514,523,494.21
  5. Step 5: Solve for x
    x = 12,514,523,494.21/125,812.80
  6. Step 6: Final answer
    x = 99,469.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.