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Finding the Fourth Proportional to 91,188, 136,721.25 and 37,866.11

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Solution

The fourth proportional to 91,188, 136,721.25 and 37,866.11 is: 56,773.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,188 : 136,721.25 = 37,866.11 : x
  2. Step 2: Convert to fraction form
    91,188/136,721.25 = 37,866.11/x
  3. Step 3: Cross multiply
    91,188x = 136,721.25 × 37,866.11
  4. Step 4: Simplify right side
    91,188x = 5,177,101,208.23
  5. Step 5: Solve for x
    x = 5,177,101,208.23/91,188
  6. Step 6: Final answer
    x = 56,773.93

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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.