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Finding the Fourth Proportional to 18,645.51, 25,730.80 and 10,262.01

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Solution

The fourth proportional to 18,645.51, 25,730.80 and 10,262.01 is: 14,161.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.51 : 25,730.80 = 10,262.01 : x
  2. Step 2: Convert to fraction form
    18,645.51/25,730.80 = 10,262.01/x
  3. Step 3: Cross multiply
    18,645.51x = 25,730.80 × 10,262.01
  4. Step 4: Simplify right side
    18,645.51x = 264,049,726.91
  5. Step 5: Solve for x
    x = 264,049,726.91/18,645.51
  6. Step 6: Final answer
    x = 14,161.57

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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.