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Finding the Fourth Proportional to 61,579.85, 84,980.12 and 33,285.56

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Solution

The fourth proportional to 61,579.85, 84,980.12 and 33,285.56 is: 45,934.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,579.85 : 84,980.12 = 33,285.56 : x
  2. Step 2: Convert to fraction form
    61,579.85/84,980.12 = 33,285.56/x
  3. Step 3: Cross multiply
    61,579.85x = 84,980.12 × 33,285.56
  4. Step 4: Simplify right side
    61,579.85x = 2,828,610,291.74
  5. Step 5: Solve for x
    x = 2,828,610,291.74/61,579.85
  6. Step 6: Final answer
    x = 45,934.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.