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Finding the Fourth Proportional to 319,134,442.90, 478,701,664.35 and 319,134,442.90

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Solution

The fourth proportional to 319,134,442.90, 478,701,664.35 and 319,134,442.90 is: 478,701,664.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,134,442.90 : 478,701,664.35 = 319,134,442.90 : x
  2. Step 2: Convert to fraction form
    319,134,442.90/478,701,664.35 = 319,134,442.90/x
  3. Step 3: Cross multiply
    319,134,442.90x = 478,701,664.35 × 319,134,442.90
  4. Step 4: Simplify right side
    319,134,442.90x = 152,770,188,967,640,032
  5. Step 5: Solve for x
    x = 152,770,188,967,640,032/319,134,442.90
  6. Step 6: Final answer
    x = 478,701,664.35

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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.