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Finding the Fourth Proportional to 543,734.80, 815,602.20 and 411,024.40

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Solution

The fourth proportional to 543,734.80, 815,602.20 and 411,024.40 is: 616,536.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,734.80 : 815,602.20 = 411,024.40 : x
  2. Step 2: Convert to fraction form
    543,734.80/815,602.20 = 411,024.40/x
  3. Step 3: Cross multiply
    543,734.80x = 815,602.20 × 411,024.40
  4. Step 4: Simplify right side
    543,734.80x = 335,232,404,893.68
  5. Step 5: Solve for x
    x = 335,232,404,893.68/543,734.80
  6. Step 6: Final answer
    x = 616,536.60

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Similar ratio
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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.