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Finding the Fourth Proportional to 125,543.45, 173,280.08 and 71,859.59

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Solution

The fourth proportional to 125,543.45, 173,280.08 and 71,859.59 is: 99,183.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,543.45 : 173,280.08 = 71,859.59 : x
  2. Step 2: Convert to fraction form
    125,543.45/173,280.08 = 71,859.59/x
  3. Step 3: Cross multiply
    125,543.45x = 173,280.08 × 71,859.59
  4. Step 4: Simplify right side
    125,543.45x = 12,451,834,817.22
  5. Step 5: Solve for x
    x = 12,451,834,817.22/125,543.45
  6. Step 6: Final answer
    x = 99,183.47

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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.