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Finding the Fourth Proportional to 84,929.76, 127,394.94 and 25,765.94

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Solution

The fourth proportional to 84,929.76, 127,394.94 and 25,765.94 is: 38,649.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,929.76 : 127,394.94 = 25,765.94 : x
  2. Step 2: Convert to fraction form
    84,929.76/127,394.94 = 25,765.94/x
  3. Step 3: Cross multiply
    84,929.76x = 127,394.94 × 25,765.94
  4. Step 4: Simplify right side
    84,929.76x = 3,282,450,380.34
  5. Step 5: Solve for x
    x = 3,282,450,380.34/84,929.76
  6. Step 6: Final answer
    x = 38,649.00

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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.