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Finding the Fourth Proportional to 705,668.07, 973,607.38 and 399,695.83

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Solution

The fourth proportional to 705,668.07, 973,607.38 and 399,695.83 is: 551,458.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,668.07 : 973,607.38 = 399,695.83 : x
  2. Step 2: Convert to fraction form
    705,668.07/973,607.38 = 399,695.83/x
  3. Step 3: Cross multiply
    705,668.07x = 973,607.38 × 399,695.83
  4. Step 4: Simplify right side
    705,668.07x = 389,146,809,843.23
  5. Step 5: Solve for x
    x = 389,146,809,843.23/705,668.07
  6. Step 6: Final answer
    x = 551,458.72

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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.