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Finding the Fourth Proportional to 127,686.04, 191,243.88 and 92,545

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Solution

The fourth proportional to 127,686.04, 191,243.88 and 92,545 is: 138,610.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,686.04 : 191,243.88 = 92,545 : x
  2. Step 2: Convert to fraction form
    127,686.04/191,243.88 = 92,545/x
  3. Step 3: Cross multiply
    127,686.04x = 191,243.88 × 92,545
  4. Step 4: Simplify right side
    127,686.04x = 17,698,664,874.60
  5. Step 5: Solve for x
    x = 17,698,664,874.60/127,686.04
  6. Step 6: Final answer
    x = 138,610.81

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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.