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Finding the Fourth Proportional to 92,239.76, 127,291.91 and 53,990.96

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Solution

The fourth proportional to 92,239.76, 127,291.91 and 53,990.96 is: 74,508.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,239.76 : 127,291.91 = 53,990.96 : x
  2. Step 2: Convert to fraction form
    92,239.76/127,291.91 = 53,990.96/x
  3. Step 3: Cross multiply
    92,239.76x = 127,291.91 × 53,990.96
  4. Step 4: Simplify right side
    92,239.76x = 6,872,611,514.72
  5. Step 5: Solve for x
    x = 6,872,611,514.72/92,239.76
  6. Step 6: Final answer
    x = 74,508.12

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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.