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Finding the Fourth Proportional to 5,285,367.90, 7,929,230.94 and 1,691,350.74

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Solution

The fourth proportional to 5,285,367.90, 7,929,230.94 and 1,691,350.74 is: 2,537,403.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285,367.90 : 7,929,230.94 = 1,691,350.74 : x
  2. Step 2: Convert to fraction form
    5,285,367.90/7,929,230.94 = 1,691,350.74/x
  3. Step 3: Cross multiply
    5,285,367.90x = 7,929,230.94 × 1,691,350.74
  4. Step 4: Simplify right side
    5,285,367.90x = 13,411,110,617,999.90
  5. Step 5: Solve for x
    x = 13,411,110,617,999.90/5,285,367.90
  6. Step 6: Final answer
    x = 2,537,403.43

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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.