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Finding the Fourth Proportional to 21,705.38, 32,558.06 and 6,123

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Solution

The fourth proportional to 21,705.38, 32,558.06 and 6,123 is: 9,184.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,705.38 : 32,558.06 = 6,123 : x
  2. Step 2: Convert to fraction form
    21,705.38/32,558.06 = 6,123/x
  3. Step 3: Cross multiply
    21,705.38x = 32,558.06 × 6,123
  4. Step 4: Simplify right side
    21,705.38x = 199,353,016.69
  5. Step 5: Solve for x
    x = 199,353,016.69/21,705.38
  6. Step 6: Final answer
    x = 9,184.50

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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.