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Finding the Fourth Proportional to 78,523.70, 108,338.72 and 44,530.43

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Solution

The fourth proportional to 78,523.70, 108,338.72 and 44,530.43 is: 61,438.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,523.70 : 108,338.72 = 44,530.43 : x
  2. Step 2: Convert to fraction form
    78,523.70/108,338.72 = 44,530.43/x
  3. Step 3: Cross multiply
    78,523.70x = 108,338.72 × 44,530.43
  4. Step 4: Simplify right side
    78,523.70x = 4,824,369,022.90
  5. Step 5: Solve for x
    x = 4,824,369,022.90/78,523.70
  6. Step 6: Final answer
    x = 61,438.39

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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.