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Finding the Fourth Proportional to 18,673.11, 28,071.12 and 17,303.47

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Solution

The fourth proportional to 18,673.11, 28,071.12 and 17,303.47 is: 26,012.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,673.11 : 28,071.12 = 17,303.47 : x
  2. Step 2: Convert to fraction form
    18,673.11/28,071.12 = 17,303.47/x
  3. Step 3: Cross multiply
    18,673.11x = 28,071.12 × 17,303.47
  4. Step 4: Simplify right side
    18,673.11x = 485,727,782.79
  5. Step 5: Solve for x
    x = 485,727,782.79/18,673.11
  6. Step 6: Final answer
    x = 26,012.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.