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Finding the Fourth Proportional to 14,606.99, 20,159.11 and 8,945.43

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Solution

The fourth proportional to 14,606.99, 20,159.11 and 8,945.43 is: 12,345.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,606.99 : 20,159.11 = 8,945.43 : x
  2. Step 2: Convert to fraction form
    14,606.99/20,159.11 = 8,945.43/x
  3. Step 3: Cross multiply
    14,606.99x = 20,159.11 × 8,945.43
  4. Step 4: Simplify right side
    14,606.99x = 180,331,907.37
  5. Step 5: Solve for x
    x = 180,331,907.37/14,606.99
  6. Step 6: Final answer
    x = 12,345.59

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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.