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Finding the Fourth Proportional to 26,726.16, 40,087.79 and 10,085.79

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Solution

The fourth proportional to 26,726.16, 40,087.79 and 10,085.79 is: 15,128.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,726.16 : 40,087.79 = 10,085.79 : x
  2. Step 2: Convert to fraction form
    26,726.16/40,087.79 = 10,085.79/x
  3. Step 3: Cross multiply
    26,726.16x = 40,087.79 × 10,085.79
  4. Step 4: Simplify right side
    26,726.16x = 404,317,031.50
  5. Step 5: Solve for x
    x = 404,317,031.50/26,726.16
  6. Step 6: Final answer
    x = 15,128.14

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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.