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Finding the Fourth Proportional to 79,534.80, 109,756.50 and 43,724.46

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Solution

The fourth proportional to 79,534.80, 109,756.50 and 43,724.46 is: 60,338.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,534.80 : 109,756.50 = 43,724.46 : x
  2. Step 2: Convert to fraction form
    79,534.80/109,756.50 = 43,724.46/x
  3. Step 3: Cross multiply
    79,534.80x = 109,756.50 × 43,724.46
  4. Step 4: Simplify right side
    79,534.80x = 4,799,043,693.99
  5. Step 5: Solve for x
    x = 4,799,043,693.99/79,534.80
  6. Step 6: Final answer
    x = 60,338.92

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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.