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Finding the Fourth Proportional to 614,447.51, 847,456.83 and 399,656.16

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Solution

The fourth proportional to 614,447.51, 847,456.83 and 399,656.16 is: 551,212.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,447.51 : 847,456.83 = 399,656.16 : x
  2. Step 2: Convert to fraction form
    614,447.51/847,456.83 = 399,656.16/x
  3. Step 3: Cross multiply
    614,447.51x = 847,456.83 × 399,656.16
  4. Step 4: Simplify right side
    614,447.51x = 338,691,342,443.57
  5. Step 5: Solve for x
    x = 338,691,342,443.57/614,447.51
  6. Step 6: Final answer
    x = 551,212.82

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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.