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Finding the Fourth Proportional to 18,893.70, 26,092.31 and 15,569.46

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Solution

The fourth proportional to 18,893.70, 26,092.31 and 15,569.46 is: 21,501.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,893.70 : 26,092.31 = 15,569.46 : x
  2. Step 2: Convert to fraction form
    18,893.70/26,092.31 = 15,569.46/x
  3. Step 3: Cross multiply
    18,893.70x = 26,092.31 × 15,569.46
  4. Step 4: Simplify right side
    18,893.70x = 406,243,099.01
  5. Step 5: Solve for x
    x = 406,243,099.01/18,893.70
  6. Step 6: Final answer
    x = 21,501.51

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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.