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Finding the Fourth Proportional to 22,635.56, 31,237.35 and 12,564.99

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Solution

The fourth proportional to 22,635.56, 31,237.35 and 12,564.99 is: 17,339.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,635.56 : 31,237.35 = 12,564.99 : x
  2. Step 2: Convert to fraction form
    22,635.56/31,237.35 = 12,564.99/x
  3. Step 3: Cross multiply
    22,635.56x = 31,237.35 × 12,564.99
  4. Step 4: Simplify right side
    22,635.56x = 392,496,990.38
  5. Step 5: Solve for x
    x = 392,496,990.38/22,635.56
  6. Step 6: Final answer
    x = 17,339.84

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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.