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Finding the Fourth Proportional to 127,996.86, 191,988.12 and 39,250.12

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Solution

The fourth proportional to 127,996.86, 191,988.12 and 39,250.12 is: 58,872.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,996.86 : 191,988.12 = 39,250.12 : x
  2. Step 2: Convert to fraction form
    127,996.86/191,988.12 = 39,250.12/x
  3. Step 3: Cross multiply
    127,996.86x = 191,988.12 × 39,250.12
  4. Step 4: Simplify right side
    127,996.86x = 7,535,556,748.57
  5. Step 5: Solve for x
    x = 7,535,556,748.57/127,996.86
  6. Step 6: Final answer
    x = 58,872.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.