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Finding the Fourth Proportional to 61,929.28, 92,892.21 and 19,809.03

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Solution

The fourth proportional to 61,929.28, 92,892.21 and 19,809.03 is: 29,712.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,929.28 : 92,892.21 = 19,809.03 : x
  2. Step 2: Convert to fraction form
    61,929.28/92,892.21 = 19,809.03/x
  3. Step 3: Cross multiply
    61,929.28x = 92,892.21 × 19,809.03
  4. Step 4: Simplify right side
    61,929.28x = 1,840,104,110.20
  5. Step 5: Solve for x
    x = 1,840,104,110.20/61,929.28
  6. Step 6: Final answer
    x = 29,712.99

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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.