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Finding the Fourth Proportional to 50,992.90, 70,368.74 and 29,189.72

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Solution

The fourth proportional to 50,992.90, 70,368.74 and 29,189.72 is: 40,280.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,992.90 : 70,368.74 = 29,189.72 : x
  2. Step 2: Convert to fraction form
    50,992.90/70,368.74 = 29,189.72/x
  3. Step 3: Cross multiply
    50,992.90x = 70,368.74 × 29,189.72
  4. Step 4: Simplify right side
    50,992.90x = 2,054,043,817.35
  5. Step 5: Solve for x
    x = 2,054,043,817.35/50,992.90
  6. Step 6: Final answer
    x = 40,280.98

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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.