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Finding the Fourth Proportional to 90,836.30, 127,274.50 and 90,836.30

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Solution

The fourth proportional to 90,836.30, 127,274.50 and 90,836.30 is: 127,274.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,836.30 : 127,274.50 = 90,836.30 : x
  2. Step 2: Convert to fraction form
    90,836.30/127,274.50 = 90,836.30/x
  3. Step 3: Cross multiply
    90,836.30x = 127,274.50 × 90,836.30
  4. Step 4: Simplify right side
    90,836.30x = 11,561,144,664.35
  5. Step 5: Solve for x
    x = 11,561,144,664.35/90,836.30
  6. Step 6: Final answer
    x = 127,274.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.