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Finding the Fourth Proportional to 543,614.80, 815,422.20 and 535,741.60

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Solution

The fourth proportional to 543,614.80, 815,422.20 and 535,741.60 is: 803,612.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,614.80 : 815,422.20 = 535,741.60 : x
  2. Step 2: Convert to fraction form
    543,614.80/815,422.20 = 535,741.60/x
  3. Step 3: Cross multiply
    543,614.80x = 815,422.20 × 535,741.60
  4. Step 4: Simplify right side
    543,614.80x = 436,855,594,103.52
  5. Step 5: Solve for x
    x = 436,855,594,103.52/543,614.80
  6. Step 6: Final answer
    x = 803,612.40

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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.