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Finding the Fourth Proportional to 19,461.76, 26,829.12 and 13,863.04

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Solution

The fourth proportional to 19,461.76, 26,829.12 and 13,863.04 is: 19,110.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,461.76 : 26,829.12 = 13,863.04 : x
  2. Step 2: Convert to fraction form
    19,461.76/26,829.12 = 13,863.04/x
  3. Step 3: Cross multiply
    19,461.76x = 26,829.12 × 13,863.04
  4. Step 4: Simplify right side
    19,461.76x = 371,933,163.72
  5. Step 5: Solve for x
    x = 371,933,163.72/19,461.76
  6. Step 6: Final answer
    x = 19,110.97

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1.5x scale

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.