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Finding the Fourth Proportional to 186,021.56, 256,712.28 and 101,138.42

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Solution

The fourth proportional to 186,021.56, 256,712.28 and 101,138.42 is: 139,572.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,021.56 : 256,712.28 = 101,138.42 : x
  2. Step 2: Convert to fraction form
    186,021.56/256,712.28 = 101,138.42/x
  3. Step 3: Cross multiply
    186,021.56x = 256,712.28 × 101,138.42
  4. Step 4: Simplify right side
    186,021.56x = 25,963,474,393.80
  5. Step 5: Solve for x
    x = 25,963,474,393.80/186,021.56
  6. Step 6: Final answer
    x = 139,572.39

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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.