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Finding the Fourth Proportional to 705,697.03, 973,864.27 and 399,830.04

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Solution

The fourth proportional to 705,697.03, 973,864.27 and 399,830.04 is: 551,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,697.03 : 973,864.27 = 399,830.04 : x
  2. Step 2: Convert to fraction form
    705,697.03/973,864.27 = 399,830.04/x
  3. Step 3: Cross multiply
    705,697.03x = 973,864.27 × 399,830.04
  4. Step 4: Simplify right side
    705,697.03x = 389,380,190,028.67
  5. Step 5: Solve for x
    x = 389,380,190,028.67/705,697.03
  6. Step 6: Final answer
    x = 551,766.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.