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Finding the Fourth Proportional to 18,113.88, 24,995.79 and 10,155.90

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Solution

The fourth proportional to 18,113.88, 24,995.79 and 10,155.90 is: 14,014.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,113.88 : 24,995.79 = 10,155.90 : x
  2. Step 2: Convert to fraction form
    18,113.88/24,995.79 = 10,155.90/x
  3. Step 3: Cross multiply
    18,113.88x = 24,995.79 × 10,155.90
  4. Step 4: Simplify right side
    18,113.88x = 253,854,743.66
  5. Step 5: Solve for x
    x = 253,854,743.66/18,113.88
  6. Step 6: Final answer
    x = 14,014.38

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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.