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Finding the Fourth Proportional to 14,656.11, 20,225.80 and 8,993.98

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Solution

The fourth proportional to 14,656.11, 20,225.80 and 8,993.98 is: 12,411.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,656.11 : 20,225.80 = 8,993.98 : x
  2. Step 2: Convert to fraction form
    14,656.11/20,225.80 = 8,993.98/x
  3. Step 3: Cross multiply
    14,656.11x = 20,225.80 × 8,993.98
  4. Step 4: Simplify right side
    14,656.11x = 181,910,513.73
  5. Step 5: Solve for x
    x = 181,910,513.73/14,656.11
  6. Step 6: Final answer
    x = 12,411.93

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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.