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Finding the Fourth Proportional to 128,955.81, 193,411.44 and 34,186.62

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Solution

The fourth proportional to 128,955.81, 193,411.44 and 34,186.62 is: 51,274.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,955.81 : 193,411.44 = 34,186.62 : x
  2. Step 2: Convert to fraction form
    128,955.81/193,411.44 = 34,186.62/x
  3. Step 3: Cross multiply
    128,955.81x = 193,411.44 × 34,186.62
  4. Step 4: Simplify right side
    128,955.81x = 6,612,083,402.93
  5. Step 5: Solve for x
    x = 6,612,083,402.93/128,955.81
  6. Step 6: Final answer
    x = 51,274.02

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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.