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Finding the Fourth Proportional to 22,258.72, 33,389.16 and 18,356

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Solution

The fourth proportional to 22,258.72, 33,389.16 and 18,356 is: 27,534.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,258.72 : 33,389.16 = 18,356 : x
  2. Step 2: Convert to fraction form
    22,258.72/33,389.16 = 18,356/x
  3. Step 3: Cross multiply
    22,258.72x = 33,389.16 × 18,356
  4. Step 4: Simplify right side
    22,258.72x = 612,891,420.96
  5. Step 5: Solve for x
    x = 612,891,420.96/22,258.72
  6. Step 6: Final answer
    x = 27,534.89

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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.