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Finding the Fourth Proportional to 92,081.70, 138,106.26 and 25,505.28

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Solution

The fourth proportional to 92,081.70, 138,106.26 and 25,505.28 is: 38,253.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,081.70 : 138,106.26 = 25,505.28 : x
  2. Step 2: Convert to fraction form
    92,081.70/138,106.26 = 25,505.28/x
  3. Step 3: Cross multiply
    92,081.70x = 138,106.26 × 25,505.28
  4. Step 4: Simplify right side
    92,081.70x = 3,522,438,831.05
  5. Step 5: Solve for x
    x = 3,522,438,831.05/92,081.70
  6. Step 6: Final answer
    x = 38,253.41

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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.