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Finding the Fourth Proportional to 5,687,999.80, 8,531,999.70 and 3,672,460.60

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Solution

The fourth proportional to 5,687,999.80, 8,531,999.70 and 3,672,460.60 is: 5,508,690.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,687,999.80 : 8,531,999.70 = 3,672,460.60 : x
  2. Step 2: Convert to fraction form
    5,687,999.80/8,531,999.70 = 3,672,460.60/x
  3. Step 3: Cross multiply
    5,687,999.80x = 8,531,999.70 × 3,672,460.60
  4. Step 4: Simplify right side
    5,687,999.80x = 31,333,432,737,461.82
  5. Step 5: Solve for x
    x = 31,333,432,737,461.82/5,687,999.80
  6. Step 6: Final answer
    x = 5,508,690.90

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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.