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Finding the Fourth Proportional to 66,897.52, 92,141.20 and 49,847.11

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Solution

The fourth proportional to 66,897.52, 92,141.20 and 49,847.11 is: 68,656.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,897.52 : 92,141.20 = 49,847.11 : x
  2. Step 2: Convert to fraction form
    66,897.52/92,141.20 = 49,847.11/x
  3. Step 3: Cross multiply
    66,897.52x = 92,141.20 × 49,847.11
  4. Step 4: Simplify right side
    66,897.52x = 4,592,972,531.93
  5. Step 5: Solve for x
    x = 4,592,972,531.93/66,897.52
  6. Step 6: Final answer
    x = 68,656.84

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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.