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Finding the Fourth Proportional to 19,425.96, 26,815.95 and 13,141.98

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Solution

The fourth proportional to 19,425.96, 26,815.95 and 13,141.98 is: 18,141.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,425.96 : 26,815.95 = 13,141.98 : x
  2. Step 2: Convert to fraction form
    19,425.96/26,815.95 = 13,141.98/x
  3. Step 3: Cross multiply
    19,425.96x = 26,815.95 × 13,141.98
  4. Step 4: Simplify right side
    19,425.96x = 352,414,678.58
  5. Step 5: Solve for x
    x = 352,414,678.58/19,425.96
  6. Step 6: Final answer
    x = 18,141.43

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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.