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Finding the Fourth Proportional to 18,603.96, 27,906.30 and 7,359

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Solution

The fourth proportional to 18,603.96, 27,906.30 and 7,359 is: 11,038.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.96 : 27,906.30 = 7,359 : x
  2. Step 2: Convert to fraction form
    18,603.96/27,906.30 = 7,359/x
  3. Step 3: Cross multiply
    18,603.96x = 27,906.30 × 7,359
  4. Step 4: Simplify right side
    18,603.96x = 205,362,461.70
  5. Step 5: Solve for x
    x = 205,362,461.70/18,603.96
  6. Step 6: Final answer
    x = 11,038.64

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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.