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Finding the Fourth Proportional to 55,581.78, 83,372.70 and 14,028.78

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Solution

The fourth proportional to 55,581.78, 83,372.70 and 14,028.78 is: 21,043.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,581.78 : 83,372.70 = 14,028.78 : x
  2. Step 2: Convert to fraction form
    55,581.78/83,372.70 = 14,028.78/x
  3. Step 3: Cross multiply
    55,581.78x = 83,372.70 × 14,028.78
  4. Step 4: Simplify right side
    55,581.78x = 1,169,617,266.31
  5. Step 5: Solve for x
    x = 1,169,617,266.31/55,581.78
  6. Step 6: Final answer
    x = 21,043.18

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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.