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Finding the Fourth Proportional to 240,988.95, 332,605.89 and 138,996.12

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Solution

The fourth proportional to 240,988.95, 332,605.89 and 138,996.12 is: 191,838.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,988.95 : 332,605.89 = 138,996.12 : x
  2. Step 2: Convert to fraction form
    240,988.95/332,605.89 = 138,996.12/x
  3. Step 3: Cross multiply
    240,988.95x = 332,605.89 × 138,996.12
  4. Step 4: Simplify right side
    240,988.95x = 46,230,928,199.15
  5. Step 5: Solve for x
    x = 46,230,928,199.15/240,988.95
  6. Step 6: Final answer
    x = 191,838.37

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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.