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Finding the Fourth Proportional to 436,000.80, 611,800.80 and 436,000.80

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Solution

The fourth proportional to 436,000.80, 611,800.80 and 436,000.80 is: 611,800.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,000.80 : 611,800.80 = 436,000.80 : x
  2. Step 2: Convert to fraction form
    436,000.80/611,800.80 = 436,000.80/x
  3. Step 3: Cross multiply
    436,000.80x = 611,800.80 × 436,000.80
  4. Step 4: Simplify right side
    436,000.80x = 266,745,638,240.64
  5. Step 5: Solve for x
    x = 266,745,638,240.64/436,000.80
  6. Step 6: Final answer
    x = 611,800.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.