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Finding the Fourth Proportional to 79,275.56, 109,399.43 and 43,465.48

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Solution

The fourth proportional to 79,275.56, 109,399.43 and 43,465.48 is: 59,981.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,275.56 : 109,399.43 = 43,465.48 : x
  2. Step 2: Convert to fraction form
    79,275.56/109,399.43 = 43,465.48/x
  3. Step 3: Cross multiply
    79,275.56x = 109,399.43 × 43,465.48
  4. Step 4: Simplify right side
    79,275.56x = 4,755,098,571.84
  5. Step 5: Solve for x
    x = 4,755,098,571.84/79,275.56
  6. Step 6: Final answer
    x = 59,981.90

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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.