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Finding the Fourth Proportional to 122,958.10, 184,437.15 and 38,728.90

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Solution

The fourth proportional to 122,958.10, 184,437.15 and 38,728.90 is: 58,093.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,958.10 : 184,437.15 = 38,728.90 : x
  2. Step 2: Convert to fraction form
    122,958.10/184,437.15 = 38,728.90/x
  3. Step 3: Cross multiply
    122,958.10x = 184,437.15 × 38,728.90
  4. Step 4: Simplify right side
    122,958.10x = 7,143,047,938.64
  5. Step 5: Solve for x
    x = 7,143,047,938.64/122,958.10
  6. Step 6: Final answer
    x = 58,093.35

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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.