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Finding the Fourth Proportional to 79,528.55, 109,748.51 and 43,229.21

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Solution

The fourth proportional to 79,528.55, 109,748.51 and 43,229.21 is: 59,655.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,528.55 : 109,748.51 = 43,229.21 : x
  2. Step 2: Convert to fraction form
    79,528.55/109,748.51 = 43,229.21/x
  3. Step 3: Cross multiply
    79,528.55x = 109,748.51 × 43,229.21
  4. Step 4: Simplify right side
    79,528.55x = 4,744,341,385.98
  5. Step 5: Solve for x
    x = 4,744,341,385.98/79,528.55
  6. Step 6: Final answer
    x = 59,655.83

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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.