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Finding the Fourth Proportional to 78,425.69, 108,227.07 and 44,434.11

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Solution

The fourth proportional to 78,425.69, 108,227.07 and 44,434.11 is: 61,318.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,425.69 : 108,227.07 = 44,434.11 : x
  2. Step 2: Convert to fraction form
    78,425.69/108,227.07 = 44,434.11/x
  3. Step 3: Cross multiply
    78,425.69x = 108,227.07 × 44,434.11
  4. Step 4: Simplify right side
    78,425.69x = 4,808,972,770.05
  5. Step 5: Solve for x
    x = 4,808,972,770.05/78,425.69
  6. Step 6: Final answer
    x = 61,318.85

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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.