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Finding the Fourth Proportional to 543,611.10, 815,416.65 and 454,964.70

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Solution

The fourth proportional to 543,611.10, 815,416.65 and 454,964.70 is: 682,447.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,611.10 : 815,416.65 = 454,964.70 : x
  2. Step 2: Convert to fraction form
    543,611.10/815,416.65 = 454,964.70/x
  3. Step 3: Cross multiply
    543,611.10x = 815,416.65 × 454,964.70
  4. Step 4: Simplify right side
    543,611.10x = 370,985,791,542.26
  5. Step 5: Solve for x
    x = 370,985,791,542.26/543,611.10
  6. Step 6: Final answer
    x = 682,447.05

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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.