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Finding the Fourth Proportional to 652,307,363.36, 978,614,249.51 and 215,608,000.79

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Solution

The fourth proportional to 652,307,363.36, 978,614,249.51 and 215,608,000.79 is: 323,462,640.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,307,363.36 : 978,614,249.51 = 215,608,000.79 : x
  2. Step 2: Convert to fraction form
    652,307,363.36/978,614,249.51 = 215,608,000.79/x
  3. Step 3: Cross multiply
    652,307,363.36x = 978,614,249.51 × 215,608,000.79
  4. Step 4: Simplify right side
    652,307,363.36x = 210,997,061,880,379,296
  5. Step 5: Solve for x
    x = 210,997,061,880,379,296/652,307,363.36
  6. Step 6: Final answer
    x = 323,462,640.06

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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.