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Finding the Fourth Proportional to 122,719.40, 184,079.10 and 63,670.40

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Solution

The fourth proportional to 122,719.40, 184,079.10 and 63,670.40 is: 95,505.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,719.40 : 184,079.10 = 63,670.40 : x
  2. Step 2: Convert to fraction form
    122,719.40/184,079.10 = 63,670.40/x
  3. Step 3: Cross multiply
    122,719.40x = 184,079.10 × 63,670.40
  4. Step 4: Simplify right side
    122,719.40x = 11,720,389,928.64
  5. Step 5: Solve for x
    x = 11,720,389,928.64/122,719.40
  6. Step 6: Final answer
    x = 95,505.60

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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.