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Finding the Fourth Proportional to 235,293.68, 324,752.40 and 139,781.93

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Solution

The fourth proportional to 235,293.68, 324,752.40 and 139,781.93 is: 192,927.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,293.68 : 324,752.40 = 139,781.93 : x
  2. Step 2: Convert to fraction form
    235,293.68/324,752.40 = 139,781.93/x
  3. Step 3: Cross multiply
    235,293.68x = 324,752.40 × 139,781.93
  4. Step 4: Simplify right side
    235,293.68x = 45,394,515,620.37
  5. Step 5: Solve for x
    x = 45,394,515,620.37/235,293.68
  6. Step 6: Final answer
    x = 192,927.05

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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.