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Finding the Fourth Proportional to 543,609.30, 815,543.55 and 277,410.90

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Solution

The fourth proportional to 543,609.30, 815,543.55 and 277,410.90 is: 416,182.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,609.30 : 815,543.55 = 277,410.90 : x
  2. Step 2: Convert to fraction form
    543,609.30/815,543.55 = 277,410.90/x
  3. Step 3: Cross multiply
    543,609.30x = 815,543.55 × 277,410.90
  4. Step 4: Simplify right side
    543,609.30x = 226,240,670,194.70
  5. Step 5: Solve for x
    x = 226,240,670,194.70/543,609.30
  6. Step 6: Final answer
    x = 416,182.49

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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.