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Finding the Fourth Proportional to 92,642.40, 138,963.60 and 53,167.05

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Solution

The fourth proportional to 92,642.40, 138,963.60 and 53,167.05 is: 79,750.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,642.40 : 138,963.60 = 53,167.05 : x
  2. Step 2: Convert to fraction form
    92,642.40/138,963.60 = 53,167.05/x
  3. Step 3: Cross multiply
    92,642.40x = 138,963.60 × 53,167.05
  4. Step 4: Simplify right side
    92,642.40x = 7,388,284,669.38
  5. Step 5: Solve for x
    x = 7,388,284,669.38/92,642.40
  6. Step 6: Final answer
    x = 79,750.58

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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.