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Finding the Fourth Proportional to 92,474.08, 138,731.76 and 36,319.60

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Solution

The fourth proportional to 92,474.08, 138,731.76 and 36,319.60 is: 54,487.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,474.08 : 138,731.76 = 36,319.60 : x
  2. Step 2: Convert to fraction form
    92,474.08/138,731.76 = 36,319.60/x
  3. Step 3: Cross multiply
    92,474.08x = 138,731.76 × 36,319.60
  4. Step 4: Simplify right side
    92,474.08x = 5,038,682,030.50
  5. Step 5: Solve for x
    x = 5,038,682,030.50/92,474.08
  6. Step 6: Final answer
    x = 54,487.51

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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.