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Finding the Fourth Proportional to 127,990.88, 192,023.16 and 39,257.40

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Solution

The fourth proportional to 127,990.88, 192,023.16 and 39,257.40 is: 58,897.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,990.88 : 192,023.16 = 39,257.40 : x
  2. Step 2: Convert to fraction form
    127,990.88/192,023.16 = 39,257.40/x
  3. Step 3: Cross multiply
    127,990.88x = 192,023.16 × 39,257.40
  4. Step 4: Simplify right side
    127,990.88x = 7,538,330,001.38
  5. Step 5: Solve for x
    x = 7,538,330,001.38/127,990.88
  6. Step 6: Final answer
    x = 58,897.40

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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.