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Finding the Fourth Proportional to 18,131.19, 25,020.66 and 10,064.38

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Solution

The fourth proportional to 18,131.19, 25,020.66 and 10,064.38 is: 13,888.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,131.19 : 25,020.66 = 10,064.38 : x
  2. Step 2: Convert to fraction form
    18,131.19/25,020.66 = 10,064.38/x
  3. Step 3: Cross multiply
    18,131.19x = 25,020.66 × 10,064.38
  4. Step 4: Simplify right side
    18,131.19x = 251,817,430.09
  5. Step 5: Solve for x
    x = 251,817,430.09/18,131.19
  6. Step 6: Final answer
    x = 13,888.63

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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.