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Finding the Fourth Proportional to 92,516.81, 138,783.92 and 25,956.68

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Solution

The fourth proportional to 92,516.81, 138,783.92 and 25,956.68 is: 38,937.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,516.81 : 138,783.92 = 25,956.68 : x
  2. Step 2: Convert to fraction form
    92,516.81/138,783.92 = 25,956.68/x
  3. Step 3: Cross multiply
    92,516.81x = 138,783.92 × 25,956.68
  4. Step 4: Simplify right side
    92,516.81x = 3,602,368,976.88
  5. Step 5: Solve for x
    x = 3,602,368,976.88/92,516.81
  6. Step 6: Final answer
    x = 38,937.46

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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.