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Finding the Fourth Proportional to 92,211.40, 138,317.10 and 52,845.40

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Solution

The fourth proportional to 92,211.40, 138,317.10 and 52,845.40 is: 79,268.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,211.40 : 138,317.10 = 52,845.40 : x
  2. Step 2: Convert to fraction form
    92,211.40/138,317.10 = 52,845.40/x
  3. Step 3: Cross multiply
    92,211.40x = 138,317.10 × 52,845.40
  4. Step 4: Simplify right side
    92,211.40x = 7,309,422,476.34
  5. Step 5: Solve for x
    x = 7,309,422,476.34/92,211.40
  6. Step 6: Final answer
    x = 79,268.10

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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.