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Finding the Fourth Proportional to 97,245.56, 145,633.20 and 80,482.20

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Solution

The fourth proportional to 97,245.56, 145,633.20 and 80,482.20 is: 120,528.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,245.56 : 145,633.20 = 80,482.20 : x
  2. Step 2: Convert to fraction form
    97,245.56/145,633.20 = 80,482.20/x
  3. Step 3: Cross multiply
    97,245.56x = 145,633.20 × 80,482.20
  4. Step 4: Simplify right side
    97,245.56x = 11,720,880,329.04
  5. Step 5: Solve for x
    x = 11,720,880,329.04/97,245.56
  6. Step 6: Final answer
    x = 120,528.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.