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Finding the Fourth Proportional to 125,800.48, 173,602.20 and 69,212.80

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Solution

The fourth proportional to 125,800.48, 173,602.20 and 69,212.80 is: 95,512.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,800.48 : 173,602.20 = 69,212.80 : x
  2. Step 2: Convert to fraction form
    125,800.48/173,602.20 = 69,212.80/x
  3. Step 3: Cross multiply
    125,800.48x = 173,602.20 × 69,212.80
  4. Step 4: Simplify right side
    125,800.48x = 12,015,494,348.16
  5. Step 5: Solve for x
    x = 12,015,494,348.16/125,800.48
  6. Step 6: Final answer
    x = 95,512.31

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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.