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Finding the Fourth Proportional to 26,005, 38,864.36 and 18,999.60

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Solution

The fourth proportional to 26,005, 38,864.36 and 18,999.60 is: 28,394.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,005 : 38,864.36 = 18,999.60 : x
  2. Step 2: Convert to fraction form
    26,005/38,864.36 = 18,999.60/x
  3. Step 3: Cross multiply
    26,005x = 38,864.36 × 18,999.60
  4. Step 4: Simplify right side
    26,005x = 738,407,294.26
  5. Step 5: Solve for x
    x = 738,407,294.26/26,005
  6. Step 6: Final answer
    x = 28,394.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.