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Finding the Fourth Proportional to 575,425,893.80, 863,138,840.70 and 571,394,815.40

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Solution

The fourth proportional to 575,425,893.80, 863,138,840.70 and 571,394,815.40 is: 857,092,223.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,425,893.80 : 863,138,840.70 = 571,394,815.40 : x
  2. Step 2: Convert to fraction form
    575,425,893.80/863,138,840.70 = 571,394,815.40/x
  3. Step 3: Cross multiply
    575,425,893.80x = 863,138,840.70 × 571,394,815.40
  4. Step 4: Simplify right side
    575,425,893.80x = 493,193,058,546,346,496
  5. Step 5: Solve for x
    x = 493,193,058,546,346,496/575,425,893.80
  6. Step 6: Final answer
    x = 857,092,223.10

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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.