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Finding the Fourth Proportional to 127,798.60, 191,553.90 and 61,270.60

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Solution

The fourth proportional to 127,798.60, 191,553.90 and 61,270.60 is: 91,836.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,798.60 : 191,553.90 = 61,270.60 : x
  2. Step 2: Convert to fraction form
    127,798.60/191,553.90 = 61,270.60/x
  3. Step 3: Cross multiply
    127,798.60x = 191,553.90 × 61,270.60
  4. Step 4: Simplify right side
    127,798.60x = 11,736,622,385.34
  5. Step 5: Solve for x
    x = 11,736,622,385.34/127,798.60
  6. Step 6: Final answer
    x = 91,836.86

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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.