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Finding the Fourth Proportional to 18,926.31, 26,118.31 and 10,542.81

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Solution

The fourth proportional to 18,926.31, 26,118.31 and 10,542.81 is: 14,549.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,926.31 : 26,118.31 = 10,542.81 : x
  2. Step 2: Convert to fraction form
    18,926.31/26,118.31 = 10,542.81/x
  3. Step 3: Cross multiply
    18,926.31x = 26,118.31 × 10,542.81
  4. Step 4: Simplify right side
    18,926.31x = 275,360,379.85
  5. Step 5: Solve for x
    x = 275,360,379.85/18,926.31
  6. Step 6: Final answer
    x = 14,549.08

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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.