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Finding the Fourth Proportional to 18,535, 25,578.30 and 10,151.80

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Solution

The fourth proportional to 18,535, 25,578.30 and 10,151.80 is: 14,009.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,535 : 25,578.30 = 10,151.80 : x
  2. Step 2: Convert to fraction form
    18,535/25,578.30 = 10,151.80/x
  3. Step 3: Cross multiply
    18,535x = 25,578.30 × 10,151.80
  4. Step 4: Simplify right side
    18,535x = 259,665,785.94
  5. Step 5: Solve for x
    x = 259,665,785.94/18,535
  6. Step 6: Final answer
    x = 14,009.48

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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.