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Finding the Fourth Proportional to 92,390.34, 127,531.44 and 54,664.50

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Solution

The fourth proportional to 92,390.34, 127,531.44 and 54,664.50 is: 75,456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,390.34 : 127,531.44 = 54,664.50 : x
  2. Step 2: Convert to fraction form
    92,390.34/127,531.44 = 54,664.50/x
  3. Step 3: Cross multiply
    92,390.34x = 127,531.44 × 54,664.50
  4. Step 4: Simplify right side
    92,390.34x = 6,971,442,401.88
  5. Step 5: Solve for x
    x = 6,971,442,401.88/92,390.34
  6. Step 6: Final answer
    x = 75,456.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.