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Finding the Fourth Proportional to 18,605.44, 25,666.50 and 12,323.08

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Solution

The fourth proportional to 18,605.44, 25,666.50 and 12,323.08 is: 16,999.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.44 : 25,666.50 = 12,323.08 : x
  2. Step 2: Convert to fraction form
    18,605.44/25,666.50 = 12,323.08/x
  3. Step 3: Cross multiply
    18,605.44x = 25,666.50 × 12,323.08
  4. Step 4: Simplify right side
    18,605.44x = 316,290,332.82
  5. Step 5: Solve for x
    x = 316,290,332.82/18,605.44
  6. Step 6: Final answer
    x = 16,999.88

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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.