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Finding the Fourth Proportional to 18,402.35, 27,603.98 and 6,715.57

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Solution

The fourth proportional to 18,402.35, 27,603.98 and 6,715.57 is: 10,073.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,402.35 : 27,603.98 = 6,715.57 : x
  2. Step 2: Convert to fraction form
    18,402.35/27,603.98 = 6,715.57/x
  3. Step 3: Cross multiply
    18,402.35x = 27,603.98 × 6,715.57
  4. Step 4: Simplify right side
    18,402.35x = 185,376,288.37
  5. Step 5: Solve for x
    x = 185,376,288.37/18,402.35
  6. Step 6: Final answer
    x = 10,073.51

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1.5x scale

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.