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Finding the Fourth Proportional to 79,313.80, 109,451.38 and 43,503.88

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Solution

The fourth proportional to 79,313.80, 109,451.38 and 43,503.88 is: 60,034.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,313.80 : 109,451.38 = 43,503.88 : x
  2. Step 2: Convert to fraction form
    79,313.80/109,451.38 = 43,503.88/x
  3. Step 3: Cross multiply
    79,313.80x = 109,451.38 × 43,503.88
  4. Step 4: Simplify right side
    79,313.80x = 4,761,559,701.35
  5. Step 5: Solve for x
    x = 4,761,559,701.35/79,313.80
  6. Step 6: Final answer
    x = 60,034.44

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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.