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Finding the Fourth Proportional to 92,668.86, 127,800.45 and 72,255.93

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Solution

The fourth proportional to 92,668.86, 127,800.45 and 72,255.93 is: 99,648.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,668.86 : 127,800.45 = 72,255.93 : x
  2. Step 2: Convert to fraction form
    92,668.86/127,800.45 = 72,255.93/x
  3. Step 3: Cross multiply
    92,668.86x = 127,800.45 × 72,255.93
  4. Step 4: Simplify right side
    92,668.86x = 9,234,340,369.17
  5. Step 5: Solve for x
    x = 9,234,340,369.17/92,668.86
  6. Step 6: Final answer
    x = 99,648.80

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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.