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Finding the Fourth Proportional to 92,258.68, 138,213.04 and 54,739.48

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Solution

The fourth proportional to 92,258.68, 138,213.04 and 54,739.48 is: 82,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,258.68 : 138,213.04 = 54,739.48 : x
  2. Step 2: Convert to fraction form
    92,258.68/138,213.04 = 54,739.48/x
  3. Step 3: Cross multiply
    92,258.68x = 138,213.04 × 54,739.48
  4. Step 4: Simplify right side
    92,258.68x = 7,565,709,938.82
  5. Step 5: Solve for x
    x = 7,565,709,938.82/92,258.68
  6. Step 6: Final answer
    x = 82,005.40

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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.