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Finding the Fourth Proportional to 82,955.56, 124,433.82 and 20,626.06

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Solution

The fourth proportional to 82,955.56, 124,433.82 and 20,626.06 is: 30,939.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,955.56 : 124,433.82 = 20,626.06 : x
  2. Step 2: Convert to fraction form
    82,955.56/124,433.82 = 20,626.06/x
  3. Step 3: Cross multiply
    82,955.56x = 124,433.82 × 20,626.06
  4. Step 4: Simplify right side
    82,955.56x = 2,566,579,437.35
  5. Step 5: Solve for x
    x = 2,566,579,437.35/82,955.56
  6. Step 6: Final answer
    x = 30,939.21

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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.