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Finding the Fourth Proportional to 18,605.63, 25,673.05 and 12,326.51

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Solution

The fourth proportional to 18,605.63, 25,673.05 and 12,326.51 is: 17,008.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.63 : 25,673.05 = 12,326.51 : x
  2. Step 2: Convert to fraction form
    18,605.63/25,673.05 = 12,326.51/x
  3. Step 3: Cross multiply
    18,605.63x = 25,673.05 × 12,326.51
  4. Step 4: Simplify right side
    18,605.63x = 316,459,187.15
  5. Step 5: Solve for x
    x = 316,459,187.15/18,605.63
  6. Step 6: Final answer
    x = 17,008.78

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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.