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Finding the Fourth Proportional to 707,766.64, 976,708.20 and 405,954.16

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Solution

The fourth proportional to 707,766.64, 976,708.20 and 405,954.16 is: 560,211.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,766.64 : 976,708.20 = 405,954.16 : x
  2. Step 2: Convert to fraction form
    707,766.64/976,708.20 = 405,954.16/x
  3. Step 3: Cross multiply
    707,766.64x = 976,708.20 × 405,954.16
  4. Step 4: Simplify right side
    707,766.64x = 396,498,756,896.11
  5. Step 5: Solve for x
    x = 396,498,756,896.11/707,766.64
  6. Step 6: Final answer
    x = 560,211.14

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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.