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Finding the Fourth Proportional to 705,664.08, 973,601.85 and 399,691.83

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Solution

The fourth proportional to 705,664.08, 973,601.85 and 399,691.83 is: 551,453.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,664.08 : 973,601.85 = 399,691.83 : x
  2. Step 2: Convert to fraction form
    705,664.08/973,601.85 = 399,691.83/x
  3. Step 3: Cross multiply
    705,664.08x = 973,601.85 × 399,691.83
  4. Step 4: Simplify right side
    705,664.08x = 389,140,705,117.89
  5. Step 5: Solve for x
    x = 389,140,705,117.89/705,664.08
  6. Step 6: Final answer
    x = 551,453.19

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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.