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Finding the Fourth Proportional to 92,665.86, 127,796.31 and 72,252.93

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Solution

The fourth proportional to 92,665.86, 127,796.31 and 72,252.93 is: 99,644.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,665.86 : 127,796.31 = 72,252.93 : x
  2. Step 2: Convert to fraction form
    92,665.86/127,796.31 = 72,252.93/x
  3. Step 3: Cross multiply
    92,665.86x = 127,796.31 × 72,252.93
  4. Step 4: Simplify right side
    92,665.86x = 9,233,657,840.69
  5. Step 5: Solve for x
    x = 9,233,657,840.69/92,665.86
  6. Step 6: Final answer
    x = 99,644.66

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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.