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Finding the Fourth Proportional to 543,755.40, 815,633.10 and 534,424.20

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Solution

The fourth proportional to 543,755.40, 815,633.10 and 534,424.20 is: 801,636.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,755.40 : 815,633.10 = 534,424.20 : x
  2. Step 2: Convert to fraction form
    543,755.40/815,633.10 = 534,424.20/x
  3. Step 3: Cross multiply
    543,755.40x = 815,633.10 × 534,424.20
  4. Step 4: Simplify right side
    543,755.40x = 435,894,066,961.02
  5. Step 5: Solve for x
    x = 435,894,066,961.02/543,755.40
  6. Step 6: Final answer
    x = 801,636.30

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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.