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Finding the Fourth Proportional to 92,331.48, 138,447.99 and 47,913.51

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Solution

The fourth proportional to 92,331.48, 138,447.99 and 47,913.51 is: 71,844.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,331.48 : 138,447.99 = 47,913.51 : x
  2. Step 2: Convert to fraction form
    92,331.48/138,447.99 = 47,913.51/x
  3. Step 3: Cross multiply
    92,331.48x = 138,447.99 × 47,913.51
  4. Step 4: Simplify right side
    92,331.48x = 6,633,529,153.34
  5. Step 5: Solve for x
    x = 6,633,529,153.34/92,331.48
  6. Step 6: Final answer
    x = 71,844.72

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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.