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Finding the Fourth Proportional to 189,792.17, 261,913.26 and 103,751.53

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Solution

The fourth proportional to 189,792.17, 261,913.26 and 103,751.53 is: 143,177.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,792.17 : 261,913.26 = 103,751.53 : x
  2. Step 2: Convert to fraction form
    189,792.17/261,913.26 = 103,751.53/x
  3. Step 3: Cross multiply
    189,792.17x = 261,913.26 × 103,751.53
  4. Step 4: Simplify right side
    189,792.17x = 27,173,902,076.23
  5. Step 5: Solve for x
    x = 27,173,902,076.23/189,792.17
  6. Step 6: Final answer
    x = 143,177.15

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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.