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Finding the Fourth Proportional to 26,805, 36,985.41 and 14,865.78

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Solution

The fourth proportional to 26,805, 36,985.41 and 14,865.78 is: 20,511.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,805 : 36,985.41 = 14,865.78 : x
  2. Step 2: Convert to fraction form
    26,805/36,985.41 = 14,865.78/x
  3. Step 3: Cross multiply
    26,805x = 36,985.41 × 14,865.78
  4. Step 4: Simplify right side
    26,805x = 549,816,968.27
  5. Step 5: Solve for x
    x = 549,816,968.27/26,805
  6. Step 6: Final answer
    x = 20,511.73

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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.