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Finding the Fourth Proportional to 543,373,252.40, 815,059,878.60 and 543,373,252.40

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Solution

The fourth proportional to 543,373,252.40, 815,059,878.60 and 543,373,252.40 is: 815,059,878.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,373,252.40 : 815,059,878.60 = 543,373,252.40 : x
  2. Step 2: Convert to fraction form
    543,373,252.40/815,059,878.60 = 543,373,252.40/x
  3. Step 3: Cross multiply
    543,373,252.40x = 815,059,878.60 × 543,373,252.40
  4. Step 4: Simplify right side
    543,373,252.40x = 442,881,737,135,631,168
  5. Step 5: Solve for x
    x = 442,881,737,135,631,168/543,373,252.40
  6. Step 6: Final answer
    x = 815,059,878.60

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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.