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Finding the Fourth Proportional to 125,755.66, 173,622.45 and 78,059.62

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Solution

The fourth proportional to 125,755.66, 173,622.45 and 78,059.62 is: 107,771.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,755.66 : 173,622.45 = 78,059.62 : x
  2. Step 2: Convert to fraction form
    125,755.66/173,622.45 = 78,059.62/x
  3. Step 3: Cross multiply
    125,755.66x = 173,622.45 × 78,059.62
  4. Step 4: Simplify right side
    125,755.66x = 13,552,902,470.47
  5. Step 5: Solve for x
    x = 13,552,902,470.47/125,755.66
  6. Step 6: Final answer
    x = 107,771.71

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1.5x scale

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.