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Finding the Fourth Proportional to 65,398.50, 98,098.68 and 18,651.38

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Solution

The fourth proportional to 65,398.50, 98,098.68 and 18,651.38 is: 27,977.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,398.50 : 98,098.68 = 18,651.38 : x
  2. Step 2: Convert to fraction form
    65,398.50/98,098.68 = 18,651.38/x
  3. Step 3: Cross multiply
    65,398.50x = 98,098.68 × 18,651.38
  4. Step 4: Simplify right side
    65,398.50x = 1,829,675,267.69
  5. Step 5: Solve for x
    x = 1,829,675,267.69/65,398.50
  6. Step 6: Final answer
    x = 27,977.33

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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.