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Finding the Fourth Proportional to 92,796.66, 138,886.92 and 84,495.78

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Solution

The fourth proportional to 92,796.66, 138,886.92 and 84,495.78 is: 126,463.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,796.66 : 138,886.92 = 84,495.78 : x
  2. Step 2: Convert to fraction form
    92,796.66/138,886.92 = 84,495.78/x
  3. Step 3: Cross multiply
    92,796.66x = 138,886.92 × 84,495.78
  4. Step 4: Simplify right side
    92,796.66x = 11,735,358,637.20
  5. Step 5: Solve for x
    x = 11,735,358,637.20/92,796.66
  6. Step 6: Final answer
    x = 126,463.16

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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.