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Finding the Fourth Proportional to 30,187.70, 41,659.17 and 18,863.77

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Solution

The fourth proportional to 30,187.70, 41,659.17 and 18,863.77 is: 26,032.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,187.70 : 41,659.17 = 18,863.77 : x
  2. Step 2: Convert to fraction form
    30,187.70/41,659.17 = 18,863.77/x
  3. Step 3: Cross multiply
    30,187.70x = 41,659.17 × 18,863.77
  4. Step 4: Simplify right side
    30,187.70x = 785,849,001.27
  5. Step 5: Solve for x
    x = 785,849,001.27/30,187.70
  6. Step 6: Final answer
    x = 26,032.09

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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.