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Finding the Fourth Proportional to 664,912,794.30, 997,278,649.65 and 173,664,480.30

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Solution

The fourth proportional to 664,912,794.30, 997,278,649.65 and 173,664,480.30 is: 260,473,072.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,912,794.30 : 997,278,649.65 = 173,664,480.30 : x
  2. Step 2: Convert to fraction form
    664,912,794.30/997,278,649.65 = 173,664,480.30/x
  3. Step 3: Cross multiply
    664,912,794.30x = 997,278,649.65 × 173,664,480.30
  4. Step 4: Simplify right side
    664,912,794.30x = 173,191,878,405,753,024
  5. Step 5: Solve for x
    x = 173,191,878,405,753,024/664,912,794.30
  6. Step 6: Final answer
    x = 260,473,072.39

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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.