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Finding the Fourth Proportional to 319,698,843.90, 479,548,265.85 and 319,698,843.90

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Solution

The fourth proportional to 319,698,843.90, 479,548,265.85 and 319,698,843.90 is: 479,548,265.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,698,843.90 : 479,548,265.85 = 319,698,843.90 : x
  2. Step 2: Convert to fraction form
    319,698,843.90/479,548,265.85 = 319,698,843.90/x
  3. Step 3: Cross multiply
    319,698,843.90x = 479,548,265.85 × 319,698,843.90
  4. Step 4: Simplify right side
    319,698,843.90x = 153,311,026,186,494,848
  5. Step 5: Solve for x
    x = 153,311,026,186,494,848/319,698,843.90
  6. Step 6: Final answer
    x = 479,548,265.85

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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.